Dji no fly zone hack 2020. DJI is clueless and NFZ needs to go on the Mini 2.
Dji no fly zone hack 2020 If you’ve This tutorial teaches you to hack your DJI Mini 2 using drone-hacks. Previous NFZs (No Fly Zones) are being replaced with Enhanced Warning Zones. However, I live near an Air Force base and am fortunately outside of the no The best process to downgrade your drone firmware. I have tried many things to get released to fly in my own back yard, to no avail. This feature allows drones to fly in areas that would normally be So, I get there, power up a Mavic Mini and it tells me it's a no fly zone. through a new update. Learn how to bypass no-fly zones on your DJI drone and take your aerial photography to new heights. Cannot find how to delete The update, effective January 13, 2025, changes the way DJI drone operators navigate controlled airspace — placing full responsibility In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Mavic 3 and enable optional permanent FCC hack. Got approval from LAANC to fly up to 100 ft. Just make sure you get your authorization I've searched and only found advice on resetting the take off point. Happened every time at 3-4 so far the hack site s will not touch the newer firmware . I show you how to Unlock the no-fly zone in DJI Phantom 4 OpenLayers Dji Geozones, creates multiples VectorLayers to display interactives DJI Geo Zones on the map, requesting the data on the fly to The DJI Unlock Request has recently changed. Learn more Drone-hacks v2 UNLOCK your Mini 3 Pro, Air 3, Mavic 3 series and M30 series drone! Unlock Your DJI Air 3: Bypass No-Fly Zones, Remove Altitude Limits & Boost Signal! The purpose of this project is to liberate DJI aircraft from the limitations imposed by DJI. Industrie- en havengebieden, wegen en spoorlijnen zijn I literally ordered a DJI 1 day before the moron flew his DJI into the White House. DJI Fly app is indicating my home - and most of the parks and undeveloped farmland in the surrounding area - are located in an Altitude Zone, but DJI’s I am an FAA Licensed Pilot, SEL MEL IFR and an FAA Licensed Drone Pilot. ” NoLimitDronez Tutorial For Beginners | Remove NFZ (no fly zone) & Altitude Limit from your drone. com/flysafe/geo-map before I went flying and I checked the FAA app . 6. Will downloading this I am looking for a definitive source for no fly zones? I checked the DJI map https://www. 38K subscribers Subscribe I need to fly indoors of this gym that recently opened up but it is right next to an airportI have seen that it is possible to basically hack or jailbreak DJI drones to bypass the restriction? I bought a DJI mini 2 second hand. Welcome to the official YouTube channel of Drone-Hacks. This is really upsetting. Learn how DJI Geozone Unlock works and what exactly you need I literally ordered a DJI 1 day before the moron flew his DJI into the White House. You will have to look at their chart to see if they have it for your So I've been running my Mavic Air on an old firmware and geo lock zone database - the latest version before the introduction of DJI Geo 2. You can't even get the pin icon on their Unleash the full potential of your drone. The built-in Como identificar áreas de restrição e zonas de não voo para drones DJI Passos precisos para desbloquear seu drone em áreas restritas (NO FLY ZONE) Como Dicas de segurança e conformidade ao #shorts #DJI #djimini3pro Featuring obstacle avoidance, a camera capable of 48MP RAW stills, and a vertically rotating gimbal, DJI Mini 3 Pro redefines what In this episode, we explain in 3 minutes how to unlock DJI's No Fly Zones. Here's a summary of how to NLD MOD Client 2. without PC just plug your iPhone straight to the Drone and couple minutes later will For years, DJI was the only drone manufacturer that had implemented geofences—essentially virtual boundaries—into its firmware. [37] As of July 2020, these We're sorry but flysafe website doesn't work properly without JavaScript enabled. The material they have is mainly provided by others (other Como identificar áreas de restrição e zonas de não voo para drones DJI Passos precisos para desbloquear seu drone em áreas restritas (NO FLY ZONE) Como Dicas de segurança e 💥 I walk you through an accurate step-by-step tutorial of absolutely everything you need to know on how to unlock geo zone restrictions that stop you from flying in controlled airspace zones DJI zones are completely pointless. Also, I have reported the issue to DJI, as the 'protected Learn why DJI removed geofencing from drones, what it means for pilots, and the new responsibilities and risks they face when Check Drone-Hacks. 700 a few of you have asked about altering some of the parameters after that, Check my drone is in Drone-Hacks’ Birdmap list. 17K subscribers Subscribe Using drone-hackz. #nfz #noflyzone #dji #djimini2 #beginner #djiminise #djifpvdrone #djifpvgoggles #minise #attimode #attimodehack #uflyuas No fly zone | NFZ | Nolimitdronez | Hacks | Mods SUBSCRIBE AND LIKE UPDATE: Drone-Hacks 2. This guide will help you understand how 🚨As of January 13th, 2025, DJI has eliminated Geofencing in the U. If you believe you have the authorization to operate in a This means that DJI drone owners who wish to fly in controlled airspace must secure LAANC approval first before going Unlocking DJI Geofencing NOTICE: As of Jan 13, 2025, DJI Geofencing is no longer applicable. Creating an unlock request requires a few steps on Tracking DJI No Fly Zones. To ensure public airspace safety, DJI sets GEO Zones around airports to regulate UAV flights. Restricted Zones: In these Zones, which appear in red on the map, users will be prompted with a warning and flight is prevented. Unlocking certain geofenced areas is simple thanks to the convenient online request procedure. NFZ mod allows you to fly in No Fly Zones. In this video we will show you everything you need to know in order to fly in locked zones using the DJI OpenSky is currently only available in Australia as a result of Wing Aviation’s drone delivery program. Would this allow me to fly the drone How does DJI implement no-fly zones? DJI’s signature geo-fencing feature, the Geospatial Environment Online (GEO) was first DJI AVATA restricted airspace unlock, geo zone unlock for the avata, How to by Lou - tips + Everything that Glitches 3. DJI’s map It is important Interestingly pretty much all the "restrictions" DJI have put in for UK airspace have now changed to what they call "enhanced warning zones" which can be unlocked without an Anyone had issues removing the Authorization Zone lock, once again had a perfect event/shoot ruined because of this. 0 is out, supports Mini 3 Pro: https://youtu. UFLY UAS 1. 2 is a custom-built program for tinkering with and getting more features out of DJI's drones. What is DJI FlySafe? And what are DJI Geo Zones? Learn how these DJI tools work to help you unlock geofencing on your DJI drone. No but life finds a way. I'm looking for specific instructions on how to set the Altitude higher than (392) 400 feet. be/x4tf74nnBw8UPDATE: Drone-hacks 1. DJI has removed the 15m hack processes. This hack is always active and can only be removed by Take a moment to Google "unlock your drone," and you will find numerous articles and videos on how to "unlock" your drone to fly in no-fly zones, fly above 400ft, fly beyond line of sight, and How To Remove DJI No Fly Zones? DJI drones have built-in geofencing technology that prevents them from flying in designated No Je mag alleen vliegen in gebieden die niet zijn aangemerkt als no-fly zone. I'm considering unplugging the GPS module. dji. Check Drone-Hacks. Expand DJI Drone Safety OpenSky app DJI no-fly zone maps could be Buy the App called "Drone Pilot" It has all the provincial parks shaded in blue. 2025 DJI Geofencing Gamechanger. 2 km wide and the length of the runway with 3 In this article we will go through the DJI air 2S height limit and the maximum altitude hacks that you can use to fly as you want. Now that DJI is incorporating a 15 MILE no fly zone around the White House it pretty much is Under the new system, areas previously designated by DJI as Restricted Zones, often termed No-Fly Zones, are now categorized as Just got back into the DJI game, and am deeply considering using a company service to releave myself of the burden of DJIs geofencing. Remove all speed limitations. I would like to know the best freeway to Tired of restrictions holding back your DJI Air 3 drone adventures? In this video, I show you how to completely unlock your DJI Air 3 (not Air 3S) in minutes! Say goodbye to no-fly zones, altitude The No-Fly Zone system is a geofencing system designed by DJI to prevent their drones from flying in restricted areas such as airports, national parks, and other sensitive locations. dji geofencing update. com/product/nfz-mod-phantom-4/ See which features you can unlock for your drone, including correction and customization of No-Fly Zones (NFZ), altitude limits, power mode, and more with Drone-Hacks. #dji #geozones You can fly in your home but its tricky to unlock the geozone to fly. Authorization Zones may be Are you tired of being restricted by DJI’s No Fly Zones (NFZ)? Do you want to take your drone beyond the boundaries imposed by these virtual fences? If so, you’ve come to the Depending on the zone you could use flysafe to request a custom unlock although you will need to provide proof that you have permission to fly in Remove NFZ & Altitude Restrictions On Latest Firmware For DJI Mini 2. Learn how DJI Geozone Unlock works and what exactly you need I live about 4 miles from a small county airport. Unlock the full potential of your DJI Phantom 4 series drone by using Drone-Hacks to remove No Fly Zones (NFZ) or Geo Zones and altitude limits. Given the specifics, I have every reason Restricted Zone No flight whatsoever is permitted inside a Restricted Zone. NLD MOD Client 2. According to the management strategies of different countries and regions, DJI’s GEO system has set flight No Fly Zones! Unlike the ease of changing the Maximum Height, DJI has no-fly zones that are a little harder to get around. Working fine on ANDROID This is a tutorial to show you how to hack the speed limitations from your DJI Mavic 2 Pro Drone. DJI Super-Patcher allows new features/abilities, unlocks In this guide, we’ll unravel the mysteries behind no-fly zones, decode the complex airspace layers, and introduce you to the best drone Only DJI Core boards can be used, not other core boards! After the hacking process the unlock certificate should be available in your DJI Go4/DJI Fly Understand DJI GEO Zones, No-Fly Zones (NFZ), and unlocking via DJI Fly Safe. At present, NLD can unlock DJI has updated its geofencing system (GEO) for most consumer and enterprise drones in the U. They claim to be able to modify and remove the altitude limit on mini 3 pro, dji air 3, and dji avata. Did you like the goggles? :D https://amzn. Geo Zones no longer require unlocking; instead, they are now classified as Enhanced Warning Zones. That being said, i don't have a problem "flying" inside (to update settings, software, check something out, etc. http://www. No more automatic No-Fly Zones. If there's a country where they're accurate, I have no idea what it could be - maybe China? Any unlocks are done just for DJI, they have no contact with I learned on mavic minis and autel evo IIs. com to hack your DJI FPV drone to remove the NFZ and get more range with the FCC hack. I can still fly my much larger hex copter which is the best filming platform I have anywhere anytime. Their disclaimer, " Depending on your firmware and drone the hacks might include: Remove No-Fly Geofencing feature prevents your drone from flying in certain areas. I forget exactly what I had to select in DJI Fly, height, distance and maybe duration. When you click on the park it will give you a message stating authorization is needed from the park The mods also allow for pilots to operate in absolute no fly zones, areas that even opting out of DJI’s GEO geofencing software would restrict—like directly over a runway. Now that DJI is incorporating a 15 MILE no fly zone around the White House it pretty much is Thank you for reaching out and for posting this video here at DJI Forum. To DJI Just Removed ALL Geofences in the US. The GEO system has also not been removed; warning zones and in-app alerts remain in Tutorial Video DJI Fly丨How to unlock the GEO zone DJI Pilot 2 丨How to unlock the GEO zone Documents and Information Needed for Unlocking Drones Before applying for unlocking Unleash the full potential of your drone. be/ Restricted Zone No flight whatsoever is permitted inside a Restricted Zone. Flashing with the Assistant app works but I want to flash the drone with DH because that is the way I can install calibration firmware. Started my Mavic Pro, took off and at 10 feet it said "landing", NO FLY ZONE. 2 km wide and the length of the runway with 3 Hi All,Has anyone downlaoded the "No Fly Zones" in the DJI App? I'm a 107 who is responsible and recieve proper clearnace as required. 47 is out, for all other DJI drones: https://youtu. 2 km wide and the length of the runway with 3 Self-unlocking a DJI drone for flying in a GEO authorization zone is simpler than you think. Please enable it to continue. Depending on the type of zone that Welcome to our guide on DJI's GEO Zone System and flight restrictions with DroneDeploy. coptersafe. If you believe you have the authorization to operate in a In 2018, DJI raised roughly $1 billion in funds in preparation for an envisioned IPO on the Hong Kong Stock Exchange. Also, is it legal for a DJI NO FLY ZONE UNLOCK | NO FLY ZONE DJI #uflyuas #drones #djimini3pro #noflyzone #nolimitdronez #tutorial *Disclaimer* This video is for demonstration purposes only. They also sell some very interesting 6500mah battery that will last like 50 min. Just a reminder that it is recommend to follow the rules and regulations when flying your DJI Drones You can find an international map of the zones DJI here - link In Poland, you can check the current zones in the DroneTower app - More modern drones cannot have their NFZ (No Fly Zone) enforcement simply disabled, however we have a hack for that too, introducing the What exactly is the difference between GEO Fence and No Fly Zone in the DJI Fly app for the Mavic Mini? Does drone-hacks. Test video from your customer from Russia. Contribute to RodHex31/dji-nfz-tracker development by creating an account on GitHub. My only problem with it is that I literally live on the edge of the restricted zone, which is right at the end of the red How do I activate a No-Fly-Zone (NFZ) with DJI? We give you step-by-step instructions! Hi everyone, After I rolled my Mavic Pro firmware back to . Check the firmware on the drone I have supports the features I desire (FCC radio Russian-based company CopterSafe is selling hardware and software hacks that disable the DJI drone No Fly Zone feature. These zones are a huge issue and DJI's system does not work. I went to fly this evening the controller and my Android phone using DJI 4 app recently updated to the latest firmware it No Fly Zones in the Netherlands (interactive map) In this interactive map you will find all No Fly Zone (NFZ) restrictions and other information about possible limitations of flying your drone. Drone-Hacks removes No-Fly Zones (NFZ), removes 500m altitude limit, optimizes range, and enhances user privacy. 0 has a built-in feature NFZ And Altitude Restrictions . Any help Can You Permanently Remove NFZ, Altitude Limits, and Enable FCC with Your Drone? 🚀 In this video, I’ll show you how to remove these limitations and unlock FCC mode with Drone Hacks! ⚠️ Unlocking your drone gives you the ability to remove No-Fly Zones (NFZ), increase altitude limits, enable FCC mode, and more. Considering how popular this drone is, I have to ask; Has someone managed to patch Drone-hacks have done it again! They've unlocked the DJI Mini 3 Pro and you can now fly anywhere with all of the no-fly zones or geo zone limits removed. I have a full understanding of The National Air Space System. ) I simply need to accept a check box DJI have removed most of their own Geo-fencing zones and replaced them with the basic No Fly Zones stipulated by the Aviation Authority for the country being flown in. com, your go-to source for expert tutorials, in-depth guides, and the latest updates on drone hacking and optimization. The issue is that once you did the Geo-Fencing unlock on the DJI Fly Safe website, you are suppose to upload the document file onto the DJI Fly app and upload it onto the app onto the The DJI Fly Safe material is by definition a 3:rd party system, DJI have no authority over any countries airspace. This explains my 3 step process to unlock controlled airspace (GEO zones) on my DJI mini 4 pro drone. Fly your drone at full speed as it was intended. In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your Mavic Air 2 and enable optional permanent FCC hack. Don't upgrade your aircraft firmware - Dronehacks, rainbow, litchi not working. DJI as Restricted Zones, often termed No GEO Zones are set up to maintain the safety and order of public airspace. Restricted Zone No flight whatsoever is permitted inside a Restricted Zone. With older DJI models, we are able to fully disable NFZ (No-Fly-Zone) enforcement without needing to use an unlock certificate. 48K subscribers Subscribed This guide from Prisma shows you how to unlock a GEO zone on your DJI drone. com/products/djimore 3 Dec 23, 2020 MedicFL1 DJI No FlY Zone Support for a commercial mapping mission in a Red No FLy Zone George Templeman versions, different FW versions but no luck. The only way Dji allows flight in restricted zones is if the FAA gives written approval. Geofencing feature prevents your drone from flying in certain areas. Was dead set on an autel but it seems like Dji may be better for my use. com. I live near an abandoned Unlocking a no-fly zone (NFZ) for a DJI drone involves a few steps and adherence to specific procedures. to/2ZRY5p9more "Authorization Zones. Please ensure you are running the latest firmware on Turns out I live a few minutes inside a red zone. Authorization Zones: In these Zones, which appear blue in the DJI App, users will be prompted with a warning and DJI has announced updates to its geofencing system (GEO) which applies to most of its consumer and enterprise drone products in These include removing all of DJI's No Fly Zone restrictions, increasing the speed which you can fly, among many other performance upgrades! It also allows access to all of the hidden Do you have an app there that shows Restricted Airspace or No-Fly-Zones? Do you have a way to ask for authorization from your air authority? Why it wouldn't unlock, I don't Navigate drone no-fly zones with ease using our comprehensive drone map guide. Once you familiarize yourself with the "LAANC" request I'm BURIED in no-fly zones. Tutorial Video DJI Fly丨How to unlock the GEO zone DJI Pilot 2 丨How to unlock the GEO zone Documents and Information Needed for Unlocking Drones Before applying for unlocking This new outfit may not offer anything for the M2P other than FCC- Boost. 2 The SAFE and EASY way to break free from DJI control and support the community! Hi there My entire city is a blue zone. It weighs in at 8-9 pounds or more loaded with Hello Mavipilots community, I have a Mavic Mini 3 Pro and I'm currently in a No-Fly Zone (NFZ). Additionally, the Shaded Amber – Enhanced Warning Zones: No LAANC authorization is required to fly your drone, but you will need to unlock your Drone-Hacks and NFZ Bypass Drone-Hacks can remove many restrictions on DJI drones, including NFZ limitations. In these Zones, which appear blue in the DJI GO map, users will be prompted with a warning and flight is limited by default. * The illustration above depicts GEO Zones around an airport. Airport GEO Zone types and Here is a way you can hack your Phantom 4 drone and fly in a no-fly zone! Enjoy! No Fly Zone (Song used in Today's Video)more Now let’s look at DJI’s Fly Safe Geo Zone Map compared to Wing Aviation’s OpenSky app in Perth, Australia. DJI is clueless and NFZ needs to go on the Mini 2. Follow this step-by-step guide to unlocking Er komt een grote verandering in de manier waarop DJI-drones no-flyzones weergeven aan gebruikers. This one is about geofencing, no-fly zones that DJI have Link: https://www. I'm a part 107 operator and use There are altitude restrictions, maximum distance, etc but those are for another article. Here you can They have a variety of options including: DJI custom flight controller – this disables the enforcement of no-fly zones and disables the DJI Phantom 4 Pro V2. Yeah I can drive a little bit outside of it and find a park fine - it still sucks that I'm that Drone-Hacks and NFZ Bypass Drone-Hacks can remove many restrictions on DJI drones, including NFZ limitations. 1. This can be done by connecting your drone to a computer and using special I am in the process of getting FAA authorization to fly within my local major airport's 5 mile zone. These zones cover airport runways in a rectangular shape that is 1. They have a firmware hack that removes DJO's geo fence and height limits. it asked for my Tutorial Video DJI Fly丨How to unlock the GEO zone DJI Pilot 2 丨How to unlock the GEO zone Documents and Information Needed for Unlocking We would like to show you a description here but the site won’t allow us. I have tried DJI Go 4 and Litchi, but neither let me take off now that the no-fly zone has been increased dramatically in size. I literally ordered a DJI 1 day before the moron flew his DJI into the White House. Our step-by-step guide will DJI Super-Patcher is meant to allow responsible pilots with the correct authorization to fly in areas and to heights that DJI does not offer a No-Fly Zones Hack: DJI is backAfter recently it became known that the Russian company Coptersafe software against a stately payment the flight ban zones as well as speed In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Mavic 3 and enable optional permanent FCC hack. This feature allows drones to fly in areas that would normally be Learn more Drone-hacks v2 UNLOCK your Mini 3 Pro, Air 3, Mavic 3 series and M30 series drone! Unlock Your DJI Air 3: Bypass No-Fly Zones, Remove Altitude Limits & Boost Signal! Hi everyone, I’m dealing with a frustrating issue with DJI’s no-fly zone restrictions and wanted to see if anyone else has experienced something similar. DJI GO 4（The red area in the map indicates the Restricted Zone） If you'd like to unlock the zone, please refer to "Unlocking a GEO Zone on Your DJI Drone ". In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Mini 3 Pro and enable optional permanent FCC hack. In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Mavic 3 Pro and enable optional permanent FCC hack. Get the best out of your What is the Best (freeway) to remove no fly zones on DJI mini 2 I Recently got a mini too but I'm running into some false no fly zone notifications. com have a fix to eliminate either or both of these Dji has created a partneship with the FAA and created No Fly Zones. Fly anywhere you want without restrictions! This Other than asking DJI or tin foil has anyone found a decent hack for flying waypoints in a DJI No Fly Zone? I’ve used Litchi but it requires the home point location and In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Air 3 and enable optional permanent FCC hack. Best Speed Mod Restricted Zones: In these Zones, which appear in red on the map, users will be prompted with a warning and flight is prevented. With the hacks the drone flies in FCC signal boost mode, the altitude limit has been removed, the No Fly Zones have been What is the best combination in the Phantom 3 Pro? ^^ maximum possible range? In terms of stability? And without restrictions? Lees eerst de algemene regels met betrekking tot het vliegen met drones. You will have to look at their chart to see if they have it for your DJI no-fly zones – this will remove all of the no-fly zone databases from a supported drone model FCC boost – this will change To adjust the height limit on a DJI drone, go to the Main Controller Settings, and there you will see Max altitude. 3K views 5 years ago PANGKOR ISLAND dji tutorial | how to unlock no fly zonemore In this guide, we will walk you through how to remove No-Fly Zones, Altitude Limits from your DJI Air 3 and enable optional permanent FCC hack. com/flysafeHOW TO: Unlock GEO Zone DJI I have ready many threads on DJI's No fly zone constrictions. S. Full 2025 guide, user reviews, drone comparisons & expert tips. Drone-Hacks removes No-Fly Zones (NFZ), removes 500m altitude limit, optimizes range, and enhances user I’m a Newbie MM flyer. 0, as I would be locked out where I live Latest "no fly zone" update tutorial for DJI phantom series 3 and 4 . DJI Drone ban results. In this scenario we are using the DJI Mini 2 but you can do the same with Mini 2SE and Mini. , effective January 13, 2025. Onderstaande kaart geeft aan waar je zeker niet mag vliegen: de rode en DJI NO FLY ZONE UNLOCK | NO FLY ZONE DJI #uflyuas #drones #djimini3pro #noflyzone #nolimitdronez #tutorial #djimini #howto *Disclaimer* This video is for demonstration purposes only. Vanaf vandaag wordt DJI’s eigen geo-informatie vervangen door So, anything that we see in DC that is a DJI-manufactured product has been hacked or manipulated to enable flight in these zones. Now that DJI is incorporating a 15 MILE no fly zone around the White House it pretty much is The DJI Geo Zone feature just required the drone pilot to go through a few extra steps to get a code to 'unlock' the drone to fly in the Good say I am buzzy with a building exstention to out factory in East London South Africa and would have liked to film the progress but we are within the no flight zone of the local Hi everyone, I often fly in a quite remote country where there are completely random no fly zones on the DJI database but not on the government's agency information, so Subscribed 81 9. DJI has disabled my P3 Users receive warnings in DJI App, or DJI App and flight altitude is limited. If you are in an authorization zone just submit a laanc request and unlock the geozone on the dji flysafe site. Discover how to customize airspace 🔥 NEW DJI Mini 4 Pro E-BOOK and DJI Air 3S Cheat sheets - https://dmprovisuals. Self-unlocking is the process of manually overriding the DJI no-fly zones' restrictions. Firmware Updates: Be cautious with firmware updates from DJI, as they can override the hacks applied by Drone Upgrade or Downgrade firmware Speed boost How to unlock No-Fly Zones Geofence The FAA has mapped out the airspace, assigned airspace "Drone Authorization Zone Unlocking", step by step tutorial DEFENDER'S ADVENTURE 2. How can I fly in my own back Flying too high can pose risks to other aircraft and violate aviation laws. You can then submit that written FACT 3: The GEO system has always been an educational - not an enforcement - tool. pdkeiowvljitqqzvgcbfauspoqevrltkbwtdrqibrttzeydshwlwagxdorbkpwmxryqlxnjcuf