[SOLVED]Fingerprint Scanner not Working After EDL flash - Android 11 - Xiaomi Mi A3 Questions & Answers

Hi Guys.
After I bricked my phone during the first Android 11 rollout last year, I managed to restore my phone via EDL mode but immediately noticed that my fingerprint scanner does not work anymore.
It lights up when fingers put on to it but does not responds. Already flash the Mi A3 stock A11 ROM via fastboot but still the same.
Anybody knows how to fix this problem or anybody experiencing this problem also?
Thanks.

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donedos said:
Hi Guys.
After I bricked my phone during the first Android 11 rollout last year, I managed to restore my phone via EDL mode but immediately noticed that my fingerprint scanner does not work anymore.
It lights up when fingers put on to it but does not responds. Already flash the Mi A3 stock A11 ROM via fastboot but still the same.
Anybody knows how to fix this problem or anybody experiencing this problem also?
Thanks.
Click to expand...
Click to collapse
@donedos
Try to downgrade to android 10 or unlock bootloader and install custom rom

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Sherzaman Khan said:
@donedos
Try to downgrade to android 10 or unlock bootloader and install custom rom
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Click to collapse
He definitely should not do that! If he does he will hard brick again. You cannot revert back to a10 once stock a11 is installed.

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garylawwd said:
He definitely should not do that! If he does he will hard brick again. You cannot revert back to a10 once stock a11 is installed.
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@garylawwd
Bro When bootloader is unlocked Every thing is allowed!

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Sherzaman Khan said:
@garylawwd
Bro When bootloader is unlocked Every thing is allowed!
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Click to collapse
I do believe you are misinformed here. You cannot downgrade from stock a11 to stock a10 without hard bricking your device.
Don't believe me? Then just try and give it a shot, you will hard brick your device 100%
You can downgrade from a10 to a9 no problems now but not from a11 to a10
Having an unlocked bootloader doesn't matter in this case xiaomi have implemented some sort of anti roll back which prevents you from downgrading even with the bootloader unlocked

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garylawwd said:
I do believe you are misinformed here. You cannot downgrade from stock a11 to stock a10 without hard bricking your device.
Don't believe me? Then just try and give it a shot, you will hard brick your device 100%
You can downgrade from a10 to a9 no problems now but not from a11 to a10
Having an unlocked bootloader doesn't matter in this case xiaomi have implemented some sort of anti roll back which prevents you from downgrading even with the bootloader unlocked
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Click to collapse
@garylawwd
Ok agreed

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Hi, this is a bit offtopic, but how did you flashed from EDL? do you know if that fix is only for A11 brick or does it work for "other brick reasons"?

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@Bysholo
Yes flash with qcom sahara flash if pc detect qdloader.
More search on youtube edl flash mi a3

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donedos said:
Hi Guys.
After I bricked my phone during the first Android 11 rollout last year, I managed to restore my phone via EDL mode but immediately noticed that my fingerprint scanner does not work anymore.
It lights up when fingers put on to it but does not responds. Already flash the Mi A3 stock A11 ROM via fastboot but still the same.
Anybody knows how to fix this problem or anybody experiencing this problem also?
Thanks.
Click to expand...
Click to collapse
Hello, I'm from Brazil and I have the same problem after recovering my phone via EDL. I already tested with custom rom and the same problem continues.
did you have any solution?

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An easy fix; just don't use the fingerprint function.
I have never used the one on my 10+, lol don't even know if it functions
Personally I don't see this an issue but it is suspicious. Is it clean?
That be my only concern...

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donedos said:
Hi Guys.
After I bricked my phone during the first Android 11 rollout last year, I managed to restore my phone via EDL mode but immediately noticed that my fingerprint scanner does not work anymore.
It lights up when fingers put on to it but does not responds. Already flash the Mi A3 stock A11 ROM via fastboot but still the same.
Anybody knows how to fix this problem or anybody experiencing this problem also?
Thanks.
Click to expand...
Click to collapse
Hello, I managed to solve the problem, follow the tutorial:
enter the phone dialer and enter the following code: * # * # 64663 # * # *
then press on the 3 points above and go to FingerPrint_C
Press on start, then it will ask to put "FLESH_FLAT" you need to put a white sheet on the sensor and support with your finger on top of the sensor.
then you will ask to put "BLACK_FLAT", then you put something black on the sensor and support it with your finger, after completing just restart the cell phone.
* Gave me a "performance_test failed" error, but after a few attempts the calibration worked and the sensor returned to work.
*Only in Stock ROM.
Sorry for my bad English.

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Essentially your calabrating the sensor.

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Pcb1997 said:
Hello, I managed to solve the problem, follow the tutorial:
enter the phone dialer and enter the following code: * # * # 64663 # * # *
then press on the 3 points above and go to FingerPrint_C
Press on start, then it will ask to put "FLESH_FLAT" you need to put a white sheet on the sensor and support with your finger on top of the sensor.
then you will ask to put "BLACK_FLAT", then you put something black on the sensor and support it with your finger, after completing just restart the cell phone.
* Gave me a "performance_test failed" error, but after a few attempts the calibration worked and the sensor returned to work.
*Only in Stock ROM.
Sorry for my bad English.
Click to expand...
Click to collapse
Thanks bro.
This is legit. I've been looking for a solution to this problem. My fingerprint is now working perfectly.
thank you so much.

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Pcb1997 said:
Hello, I managed to solve the problem, follow the tutorial:
enter the phone dialer and enter the following code: * # * # 64663 # * # *
then press on the 3 points above and go to FingerPrint_C
Press on start, then it will ask to put "FLESH_FLAT" you need to put a white sheet on the sensor and support with your finger on top of the sensor.
then you will ask to put "BLACK_FLAT", then you put something black on the sensor and support it with your finger, after completing just restart the cell phone.
* Gave me a "performance_test failed" error, but after a few attempts the calibration worked and the sensor returned to work.
*Only in Stock ROM.
Sorry for my bad English.
Click to expand...
Click to collapse
Thanks dude it's work, I can't find any solution for this since hard brick at new year, thanks again

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Pcb1997 said:
Hello, I managed to solve the problem, follow the tutorial:
enter the phone dialer and enter the following code: * # * # 64663 # * # *
then press on the 3 points above and go to FingerPrint_C
Press on start, then it will ask to put "FLESH_FLAT" you need to put a white sheet on the sensor and support with your finger on top of the sensor.
then you will ask to put "BLACK_FLAT", then you put something black on the sensor and support it with your finger, after completing just restart the cell phone.
* Gave me a "performance_test failed" error, but after a few attempts the calibration worked and the sensor returned to work.
*Only in Stock ROM.
Sorry for my bad English.
Click to expand...
Click to collapse
Thank you very much, this was really the thread's question and with it solved.

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Hi Guys.
I've tried this alternative but i keep getting this performance_test failed. Does any one can help me describing what kind of white/black sheet you used? It is a thick sheet, thin sheet??? I need to press my finger strongly or just soft???
Thanks.

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Pure genius! My fingerprint sensor was defunct for more than a year now, now restored. Many thanks!!!!

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Help, Guys ....

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Pcb1997 said:
Olá, consegui resolver o problema, siga o tutorial:
digite o discador do telefone e digite o seguinte código: * # * # 64663 # * # *
em seguida, pressione os 3 pontos acima e vá para FingerPrint_C
Pressione em start, então vai pedir para colocar "FLESH_FLAT" você precisa colocar uma folha branca no sensor e apoiar com o dedo em cima do sensor.
então você vai pedir para colocar "BLACK_FLAT", aí você coloca algo preto no sensor e apóia com o dedo, após completar basta reiniciar o celular.
* Gerou um erro "performance_test failed", mas depois de algumas tentativas, a calibração funcionou e o sensor voltou a funcionar.
* Somente em estoque ROM.
Desculpe pelo meu péssimo inglês.
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Thank you man, I was trying to find solutions for a long time, luckily this procedure worked out, thank you very much
leonardo_evaldy said:
Socorro pessoal ....
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Então, eu tive um pouco de dificuldade no começo devido à repetição do erro "performance_test falhou", mas dps insistir muito que funcionou, sugiro colocar o papel logo após clicar no próximo, usei white paper legal padrão a4 , para o preto usei um papel mais rígido, não apliquei muita força. Espero que você chegue aí mano boa sorte
Desculpe pelo péssimo inglês, (nós)

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Hi guys, managed to recalibrate the sensor but still no luck in recognising the finger print. Any other suggestions? Flashed to standard Rom via EDL and then auto updated to September A11 updates.