FIX YOUR BRICKED SPRACING F3 BOARDS-Programming failed | No Response From Bootloader | Flashing

Download: www.st.com/en/development-tool...
Easy way to fix "failed to connect to serial port" , "programming failed, no response from bootloader", solid blue light, and most other problems. Use the same process for the naze, but don't
change baud rate and download firmware for naze.
Steps:
-disconnect board
-short bootloader pins
-open up stm flasher
-set baudrate to 256000
-download firmware hex file
-flash
-un-short boot pins

[@sohansunku1016]

Thank you guys for the wonderful comments! I'm glad that so many of you were able to benefit from this tutorial. If this video helped you out, please consider subscribing :)

[@quarts879]

3years later, still worked!! Thank you very much ;D

[@jackfairman7371]

Just earned a like and a sub

[@jamessanford414]

You sir have just got me out of a 7 hour headache, I was supposed to be flying for my birthday tomorrow and I had bricked this fc today so thought I was screwed. Now I can relax and have a good birthday. Thank you so so much! Legend!

[@jlleo1327]

3 years later you still got to aid someones there. Thank you so much bud!

[@PaulDoodes]

Woke up this morning happy as I remembered how to re-flash my boards using the correct pins; thanks again. Subscribed.

[@NotTheLastGinger]

I cannot express how amazing this video is. I have SCOUERED the internet and decade old forums to figure out how to fix a single issue with this board. You solved all of them in 7 minutes. Thank you.

[@aakashjana6225]

When I liked the video it got 1k likes . But Huge thanks to you man . It's because of you after hours of struggle i could finally flash my board. Thanks a ton man. Just love your effort.

[@Olimatic]

You're the man! I've been trying to fix my board for a while now and was about to give up until I found your video, Thanks!!!

[@kokouvia.5599]

Thank you so much!!!!!. This is the only tutorial that works since a week I was trying all the ways to get back my FC

[@vincebinondo8815]

You are the man, man! I accidentally bricked my DYS Elf trying to update it to the wrong firmware. Not only have you helped me fix my microkwad, but now I also have D-shot commands available and can flip it back over after crashing upside down!

[@sohansunku1016]

Vince Binondo Gotta love turtle mode!

[@gordonrelyea1917]

Thanks, Sohan! You seem to be the only one to know the correct drivers. It works!

[@pewpewplatta89]

4 years later still working like a charm thanks for the post!

[@whiteout6993]

YOU ARE THE MAN! I just tried this and it worked for me! like john costello said in the below comments, Bardwell did not have a video of this as far as i know! Keep up the good work!

[@raymondhjelland1211]

Thank you soooooo much. I havent even gotten my drone off the ground before i had loaded the wrong software by accident. You are a lifesaver.

[@fabriciomedeiros3011]

Thank you, my friend !! I was thinking my FC was dead, and this procedure saved my board !! I was about to smash it with a hammer... LOL !!!! Thanks again !!! Amazing tutorial !!!!

[@framtam]

THANK YOU! Took me hours to find this vid, and it finally worked. My board was stuck in boot mode (i think) only solid blue light, and this solved it. thanks again.

[@liloo1212]

This still Working in 2 July of 2018, Great Tutorial and you save my Old F3 - Drone brother! Thanks so much!

[@brokendrones6286]

THANKS. Took a quick minute to get the ST site to download the file, but got it figured out. Thanks again!

[@1031Six]

Broken Drones how did u open the STI GUI flasher. mine just installs a driver, not seeing an exe file

[@joshuagomez4415]

THANK YOU! Your a legen. Spent so long messing around with Zadig and this was soo easy. Thanks!

[@filipszkop8277]

Omg thank you sooo much 🙏 I spent hours trying to do it in betaflight and it always timed out but with your software I finally have the latest version of btfl. You rock man

[@intuitive62]

This is what I was looking for!!! Fantastic tutorial and it works! You saved my time and frustration, Thank You so much!

[@craigcorbin4098]

Thanks! This video just helped one of the guys in our group recover a bricked FC. Appreciated!

[@sohansunku1016]

Craig Corbin you're welcome! Happy flying

[@PaulDoodes]

OMG I've been trying for ages to connect the boot pins... and I was shorting the two pads near the word boot, not the two holes at the end of the rail.... thank you.

[@twonkit]

thank you very much. i have fixed my spracing f3 delux fc with your help ,your a star ,all the best

[@mikef7341]

My saviour. Been trying to fix for three days. Finally, this is the only thing that worked.

[@happyfalangme]

You are an absolute star.. I was tearing my hair out thinking that i was stuck on Clean flight.. Thank you so much.. No i lust have to get my on board Minim OSD to work..grrr. Thanks Again.

[@daytonpyro]

you are the man buddy. ive tried so so many ideas from others out there. none worked for me... yours did.. thanks.. I am now able to use the latest version on CF and the FC board has the latest version of CF on it... thanks again..

[@sohansunku1016]

daytonpyro I'm glad I was able to help. I'm not sure what setup you're running or if you've tried betaflight before, but I would recommend it over cleanflight. Happy flying!

[@roboedar]

Thanks for the help, dude. Simple and to the point. Very good vid.

[@ptitloup5597]

Love ya !!! Trying all but nothing work . Your méthod work perfectly before I'm crying ! Gonna go to sleep with smile now 😁👌

[@Maximos75]

thank you thank you thank you my friend you really helped me out with this video . I had solid bleu light with my cleanflight f3 racing I was working on it for maybe 3 weeks to get it to work and I have 2 of them with solid bleu light and all its troubles. Thanks to you I got it working. Once again thank you . Greetz from MaxTech Holland

[@sohansunku1016]

MaxTech You are very welcome! Happy flying!

[@simonhardy4216]

Many thanks for the info I was going crazy trying to get the configurator to go into dfu mode but no joy so this was a massive help thanks once again.

[@danielpifko8187]

Oh man, more than one week suffer come to the end thanx to this video and you!

[@SteamValve496]

Thank you, This worked great. I didn't think I'd see the board work again.

[@sohansunku1016]

Matthew Bonner you're welcome man!

[@MADDOG724]

Wow, this was a life saver for my FC. Nothing else worked. Can't thank you enough!!!

[@sohansunku1016]

I'm glad that I was able to help!

[@MrSupergumpi]

legend! thank you so much have been driven nuts trying to get a flash to INAV this worked a treat! PS> had to download and install CP210 driver and stm 32 driver (as inav/cleanfligh/betaflight) before the i could get the updater to run. Also my board had to be in 115200 baud.

[@Salamattder]

It’s 2022 July. And you helped me unbrick my board after a bad bluejay flash. Thanks from the future

[@laffen1990]

Oh finally got mine working, after watching your video! What a great tutorial! Have a coockie, sir!

[@dronepedia]

You Sr. Just gained the heaven, I will gladly make a video about this fix in my chanel and metion your video cause I just learned this from you. Thank you.

[@sohansunku1016]

Dronepedia thanks man really appreciate it. It's good to let people know this method. I was frustrated for a long time

[@gankedfpv6381]

Thanks for making this man. Any idea why BF configurator/STM drivers etc can't get the NAZE to show up in DFU mode?

[@NickWoelk]

Thanks so much, I followed your steps exactly and was able to connect to Betaflight!

[@SouKube]

i think i had flashed the wrong firmware (instead of spracingf3, i did stm32 f3 discovery) and ended up with ""programming failed, no response from bootloader" (i think so). and your video solved the problem. thanks and keep up the good work.

[@billsomrak]

Thanks! Saved my bacon, as I mistakenly flashed my SPracing F3 with Betaflight 3.1.6 for SPracing F3 Evo ... thought I was screwed, but downloaded the STM flasher and was able to load correct FW. Even though I had a solid blue LED, jumpering the BOOT with a pair of tweezers, I apparently wasn't getting good contact to possible middle layers of the board. So, I soldered a wire jumper in and was able to get the Flasher program to work (prior to soldering in the wire, it would time out. Thanks again. Thumbs UP for sure! Cheers!

[@1031Six]

Bill Somrak how did u get the GUI flasher thing to work? all it seems to do is install a driver. I see no application or exe file to run

[@billsomrak]

When you install the program mention above, it should make a folder in your startup menu called STMICROELECTRONICS. Inside that folder will be a folder called FLASHLOADER. Inside that folder are 3 entries: a Command line program (for DOS), a program called Demonstrator GUI, and an Uninstall file. Run the Demonstrator GUI. You may have to install some STMicro drivers 1st, in order for this to work. I'd already installed those on my computer (Windows 7 - 64bit) long ago, so the Demonstrator GUI program fired right up. Hope that helps.

[@samson6820]

thanks , first time building quad and your vid just saved me taking a hammer to the build and my pc .

[@sohansunku1016]

David Cameron Lol I'm glad I could help. Good luck with the build!

[@HEYITSMARKOO]

I hoped so mutch that it work at my FC but still not working as it should. Red light blinking slowly 4 times follwed by 5 fast flashes of the red led. What could it be?

[@sunshine5178]

Thank you so much for this information. I used it this morning to fix my board and it worked perfectly!!

[@ewokshoterz]

I'll check if I have the blue light when I get home. Currently my quad function perfectly except it won't open serial port. Betaflight recognizes com 5 but windows calls the board "unrecognised device" instead of stm32 Do you think this will fix my issue (the stock tuning is awful) I'm scared that if it doesn't I'll be left with a board that still won't connect and now isn't set up properly (won't bind, arm, etc)

[@kadebulow887]

your a life saver. just followed all the steps and it worked!

[@flycrew]

Thanks, you just helped me big time. Super effective. Looks like many people have been helped by this video. Well done.

[@thomassmithers2987]

Took me 2 hours of trying to find out what to do and nothing worked. Then I found your video and it worked

[@christopherlee3045]

this worked for me, was ready to send back to banggood. thank you bro!

[@sconerin1]

You my friend have just made my day had 3 fc boards was going to bin them all.Till i found your vid thank you so much saved me a bomb (a lot of cash) :)

[@sloterer]

Worked perfectly! Saved me a good $30 in ordering a new flight controller - took me a while to save up for my wizzard 220 and I tried hooking it up to work with my turnigy 9x - that worked --- to an extent - fast forward another 5 months and I bought a flysky FS I6 so I could use the S-bus instead of trying to make it work with just manual hookups to each channel (never got the auxiliaries to work properly in the first place with my 9x...the adventure continues and I have yet to maiden the thing - been just fooling around with 1s quads - they're lots of fun) had to recalibrate the sticks because channel 1 on the FS I6 kept drifting to the left so I didn't want to risk it even ordered a new direction gimbal (useful as a spare anyways) the recalibration did work although it will probably still drift... somewhere along the way as I was trying to program the SPracing f3 board in the wizzard i think I disabled the UART1 which I think also disabled the USB connection and afterwards the board wouln't connect to betaflight... tried reflashing it in there - couldn't get a response from the bootloader -after I followed the instructions here it worked first time with the flashloader. Thanks for the help mate!

[@uleads58]

thanks lil man , after hours of searching i stumbled upon your goldmine.

[@sohansunku1016]

uleads58 no problem big man

[@posenyang9549]

any direction for a mac user? Got all the problems you mentioned. Tried to install ST but it only runs on Win.

[@hursto75]

Thank you, I had a new mini naze and nothing would flash it. I tried this method and it worked first time.

[@Blackys-Boy]

Thank you for making this video. It was super easy to follow and helped me out immensely.

[@sohansunku1016]

DGreco63 You're welcome man. Happy Flying!

[@barrytaylor6053]

Major THANK YOU!!!! This fixed my problem. You rock, sir.....Thanks again!!!!!

[@saahirga4476]

hi, I did everything you said, but I just got the same, "Programming Failed, no response from bootloader error again." I can keep trying it over and over again, but do you have any other suggestions?

[@leeroysnitch2496]

I dont know if you still read these, but I am not able to download the software. do you have the files still? Thanks

[@timlangley5387]

Thanks, my sp3 was bricked on arrival and this saved me from having to return it!

[@sohansunku1016]

Tim langley You're welcome!

[@daytonpyro]

I used a jumper. hooked up the usb. port name wont work like you said. but it still wont show a com port if I open and close clean flight.. am I missing a step?

[@MM-oc5kd]

Thanks, that was a really helpful video - saved christmas this year

[@MM-oc5kd]

Though burnt it 2 days after the fix :D

[@alasdair4161]

Excellent, just one little stumbling block, before you select your hex file, open the drop down box on the right and enable 'Hex' else it won't recognise the file type. Default seems to be 'en'. Worked brilliantly with two bricked boards. Thanks.

[@josemarcosrocca9446]

Very good boy. Very good!! I'm in Brazil. It worked. Problem solved! Congratulations!

[@PW-gf1gu]

estou com dificuldades amigo, por favor onde encontro os arquivos hex??

[@FliVisualsMedia]

Hi, im finding when i dont have the board in bootloader mode the software will find it via the com port. However when I do have it in bootloader mode the software can't find it in the drop down menu! Any help would be greatly appreciated :) Thank you

[@ojohanso]

Tusen takk!!! You saved my day!

[@teddy_-qn8dw]

I can't seem to find the Flash Loader demonstrator after installing it threw the wizard, any ideas on what i've done wrong?

[@coreyflemming1115]

OUTSTANDING! Thanks for the help.

[@nfuller9029]

does betaflight 4.1 support f3 boards? I searched on gethub for my board and its not there.

[@vishu996]

I bricked my fc 4 time only your video helped me, always.

[@michaeld.4605]

so i tried the steps, when i open the st flasher it says "no response from bootloader" and on the other available port it says "the port is in use by another application". Do you have any suggestions? Thanks in advance :)

[@jannpe1003]

when click in the demonstrator the first time next I get "No response from the target, the Boot loader can not be started. Please, verify the boot mode configuration abd the flash protection status, reste your device then try again." My FC is showning only one solid blue light so it should be in Bootloader mode. Can someone help me??

[@terbospeed]

Though this didn't work for me, it lead me down the trail of finding the STM32 ST-Link Utility, and flashing through the debug port with an ST-Link dongle left over from the h8 days.. they are around $5, and potentially works like this on most boards with SWCLK/SWDIO/RST pins..

[@Dav5049915]

This just fixed my "bricked" naze32. Needed to push the cleanflight 2.2.0 instead of 2.5.0, but it worked and I can talk to my FC again!

[@Kid2577]

thanx guy! You save my old Naze from stm32 timed out programming failed error!

[@solyksoliman6310]

Life saver, Thank you for this simple and effective little tutorial = )

[@cesarango01]

STM32 will not show in ports of the device driver. Only in USB devices will it show STM32 Bootloader. I am at a standstill. Nor STM32 Virtual Com Port in my Zadig. Any ideas? Thanks.

[@funiggaweed]

Best or rather the only tutorial for this ! rly rly grat man thank you :)

[@sohansunku1016]

martin posch You're welcome man!

[@MADDOG724]

yep!

[@jos6115]

Super this un-bricked my board....Thank you!!!

[@8mybcur]

Please help me! I've downloaded the driver but I can't find the demonstrator gui that you have.

[@JohnnytheBikeGuySLC]

Excellent work kid! I like your style.

[@KillSwitchKilo]

i have the same board but no lights are showing when i shorted out the boot pins, i was just wondering maybe my board is ded :/

[@brainflowvideos]

it worked! thanks so much for creating this video :)

[@RafaelMohedano]

You save my FC man! I was about to throw it out the window Thank you!

[@mioso5401]

Thanks man! Saved me a ton of time!!

[@Sandaco]

Hi I’m trying to run the ST file but am getting an alert saying unknown publisher, are you sure this is safe?

[@moss3682]

so i closed clean flight and betaflight but i still dont see comport 3 that is what i have it under should i restart my computer but then keep it in boot mode

[@nepali3daudio366]

i was totally finished just my thoughts. But you helped me thanks alot man.

[@Ray_Piste]

Would this be the same process for a "Failed to open serial port" error

[@moshah2]

I can't thank you enough! I had scratching my head for quite some time. everyone else on the youtube are just PLUG FLASH AND DONE. I'm like why is my shit not working... On the side note: I don't see many Indians with this hobby + making videos... (I'm Indian) It's funny your mom's (I think) calling your name in the back SOHAN SOHAN lol. my mom does the same thing. Keep up the good work!

[@sohansunku1016]

Lol everyone decided to make noise when I started recording. I'm glad that I was able to help!

[@AlexTer221]

When I arm my quad the fc starts blinking red is it bricked?

[@gadgetman404]

Can't find sp racing hex file as it's 6 yrs later so how I find them now please downloaded all files lbut don't find com port Cheer's

[@madforit9661]

the power light on the fc will not come on for some reason But the usb is getting reconised by the pc even though the port will not open

[@johnbarnes5142]

thank you, i had looked all over the place as i am a newby, worked for me

[@viktoresin9010]

Thank you VERY much, your video helped me solve my problem.

[@YankoStoev]

You are the man! Thanks for the help, brother...

[@brunogp8269]

Man, very well explained! I was about to trash this. Thank you, thank you,thank you!!!!

[@bozkip7509]

Do you need to solder the boot pins??

[@hendrikdjaja4152]

Im sorry if this is Out Of Topic, I was stressed out: My board FC CrazybeeF3 BNF Frysky, my latest firmware : betaflight_3.3.3_crazybeeF3FR (Stable) on betaflight configurator tab : I choose : SPI_Rx Support The right thing to do is choose Frysky_D or Frysky_X and save it BUT :( I accidently choosing wrong SPI Reciever Provider to A7105_Flysky_2A and save it now my FC can not connect to USB anymore, everytime I try connect it is says " Unkown USB device (Device descriptor request Failed) for windows 10" is there any suggestions to fix it? please help me anyone..

[@knishi964rc5]

I was able to rewrite F3 with your video. Thank you!

[@sohansunku1016]

knishi964 RC You're welcome man. Happy flying!

[@dario_hxc]

thanks for taking the time to do the video, I accidentally switched off the USB VCP and now my omnibus f3 is bricked. Any suggestions? thanks!