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Fingerprint not detecting in custom os since installed official 8.1

Fingerprint not detecting since I have installed custom ROM after I have installed official Oreo
On official Oreo fingerprint shows up in settings but in custom Oreo all works fine and best but fingerprint doesn't show up in any settings I have tried 4 8.1 custom roms like sex pixelexpirience 64 bit versions all works flawlessly tested Google camera it works the best but not detecting fingerprint even after searching fingerprint it only shows up gestures's fingerprint in gestures's system menu PLZZ give me link of official Oreo build OPSS28.65-36-3 with Indian band so I could try to flash via fastboot and then recheck if custom roms fingerprint gets detected or not..

Update ur bootloader to Oreo one and then try flashing the rom

Surya Guduru said:
Update ur bootloader to Oreo one and then try flashing the rom
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I don't have fastboot official oreo link can anyone give me plzz

hondraopranav said:
I don't have fastboot official oreo link can anyone give me plzz
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U told u had the official 8.1 ROM ....in that ...... fastboot Flash bootloader bootloader.zip and fastboot flash modem non-hlos.bin

change the base of your fp to nougat base again

Hey check this out

Surya Guduru said:
U told u had the official 8.1 ROM ....in that ...... fastboot Flash bootloader bootloader.zip and fastboot flash modem non-hlos.bin
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The OP didn't say they had the official 8.1 ROM, they said they had installed official Oreo. AFAIK There is no official 8.1 ROM for Sanders. Some people have taken the OTA for their device and repackaged it into an UNofficial flashable package, but that's not the same thing, and reportedly may be causing problems on EU & US variants, so I wouldn't recommend it.
I have the same problem with my FP reader.
I don't have an official 8.1 ROM (because there isn't one, lol), but I installed stock nougat 7.1.1 (retus, in my case) and then got the OTA upgrade to 8.1, after that fp+VoLTE are 100% working.
Then, as soon as I change to a custom 8.1 (or 9) ROM, VoLTE still works, but the fp is no longer recognized by the system.
If I flash back to stock nougat, FP comes back (and LTE breaks, but can be fixed by installing the 8.1 OTA upgrade again, or by getting to a root terminal and fixing permissions on /persist, I've personally verified both methods to restore functionality (assuming your /persist is unmolested - if it is, you're SoL).
Going from fully working official nougat or official Oreo, to any Oreo (or Pie) custom ROM still seems to break the FP reader again. I'm getting really tired of wiping my device...
Not A Solution #1
As suggested here: With FP + VoLTE working under official 8.1 OTA update, I installed TWRP & backed up /EFS, then installed my custom 8.1 ROM (Validus final) and restored the backed up /EFS, but instead of bringing my FP back, it just caused bootloop and I had to roll back to stock and start over. I skipped rolling back to Nougat before flashing custom, is that important? Why would it matter?
Not A Solution #2
After installing the custom 8.1 ROM I tried flashing the Nougat FP base. It had no effect.
Maybe A Solution? UPDATE: YES. A SOLUTION.
As suggested in this post:
1 - download the latest nougat stock rom (link removed - the correct one will vary depending on your device, up to you to obtain the correct firmware);
2 - unzip the above file and cd into the resulting directory;
3 - reboot your phone in fastboot mode;
4 - from terminal (linux or windows, in linux I had to do it as root user, using sudo), type:
fastboot flash bootloader bootloader.img <enter>
fastboot flash modem NON-HLOS.bin <enter>
fastboot reboot <enter>
By doing above steps, your phone should get fingerprint options back.
I did this, it worked, with one additional step - I had a pattern set before. After the fingerprint reader was 'reinstated' the pattern no longer worked. Rebooting into Recovery and flashing lockfix.zip removed the security so that I could set it up again properly. Find lockfix.zip in this post.

Downgrade

Hello friends.
Device: Mi A2 converted to Mi6X with ARB 4 and unlocked bootloader
Custom Recovery: Pitch Black Recovery
Current system: Pixel Experience CAF 9.0 PIE
Question: Can I go back to any Oreo Rom?
I've tried to install Havoc 8.1 but the system don't boot, I get stuck on Fastboot screen.
Is there any way to install an custom Rom Oreo based?
Thank you guys.

wrong thread, post in QnA section not here !!

let try older twrp,, but not pitch black, ,am not recommend it

Dload official TWRP and You`ll be able to flash other ROM.

any TWRP gives me a black screen

felipedon said:
any TWRP gives me a black screen
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by default, pitchblack recovery format data partition as F2FS.
fyi, not every each kernel and recovery support F2FS by default.
try change your data file system to ext4 first with pitchblack before you switch to twrp.

inVain_theGenuine said:
by default, pitchblack recovery format data partition as F2FS.
fyi, not every each kernel and recovery support F2FS by default.
try change your data file system to ext4 first with pitchblack before you switch to twrp.
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I know, I've already try this.

Did You try to flash any other Pie ROM?

Every Pie Rom worls perfeclty
Salacue said:
Did You try to flash any other Pie ROM?
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Click to collapse

felipedon said:
Every Pie Rom worls perfeclty
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So, why You prefer to install Oreo ROM, when Pie ROMs works perfect?

felipedon said:
Hello friends.
Device: Mi A2 converted to Mi6X with ARB 4 and unlocked bootloader
Custom Recovery: Pitch Black Recovery
Current system: Pixel Experience CAF 9.0 PIE
Question: Can I go back to any Oreo Rom?
I've tried to install Havoc 8.1 but the system don't boot, I get stuck on Fastboot screen.
Is there any way to install an custom Rom Oreo based?
Thank you guys.
Click to expand...
Click to collapse
>ARB4
"I want to go back to oreo from pie"
Do you know what ARB stands for? Antirollback, meaning if you upgraded to Pie you can ONLY install Pie roms. You cannot circumvent ARB.

How to flash Android 11 GSI on mi 8 (dipper)?

Does anyone have the complete steps to flash the Android 11 GSI?
This article just gives me bootloops on my mi 8 when flashing the android 11 GSI.

vic97 said:
Does anyone have the complete steps to flash the Android 11 GSI?
This article just gives me bootloops on my mi 8 when flashing the android 11 GSI.
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Do not flash GSI Rom But if you must, it's your decision.
Generally with GSI roms you only flash the system part. Everything else such as boot, vendor and drivers will be from a rom made for the mi8, such as an AOSP rom or a custom miui rom such as Xiaomi.EU. below are basic instruction after you already have a rom installed, have removed all passwords, and have chosen factory reset in recovery.
Follow these steps at your own risk, and be sure to make a backup first and copy it to your desktop
These are basic generalized Instructions after Formatting storage then installing a rom specifically made for the mi8. I strongly suggest that you do not Flash the new beta build, and that you instead wait for someone to build it specifically for the mi8.
The Mi8 can only use type A GSI's roms
1. Reboot Recovery
2. Perform factory reset, passwords must be removed or you will have a bootloop
3. Install GSI to system
4. Reboot to recovery, then reboot to OS > Setup > Enjoy testing it or enjoy your brick?
Once again, I would strongly suggest that you wait and not flash the new Android 11 rom. Also there is a very good chance that it will not boot to system, its early and beta builds are always super buggy at first. usually new builds are ready for non-Google devices by August.

vic97 said:
Does anyone have the complete steps to flash the Android 11 GSI?
This article just gives me bootloops on my mi 8 when flashing the android 11 GSI.
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https://forum.xda-developers.com/mi-8/development/andorid-r-gsi-r1-developer-preview-t4054777

Question How to flash gsi without twrp?

Sorry Im new in xiaomi modding,is there a way to flash gsi without twrp?,can I flash gsi from fastboot?

yes, via fastboot. the command is flash system system.img (replace system with the name of the rom). connect to nippon gsi telefram Channel. you can find a large choice of ported rom from xiaomi devices. but i'm not sure vendor are fully compatibile with mediatek. but you can try. flashing system don't damage the bootloader. so you can reflash easy stock in case of problems

wetito said:
yes, via fastboot. the command is flash system system.img (replace system with the name of the rom). connect to nippon gsi telefram Channel. you can find a large choice of ported rom from xiaomi devices. but i'm not sure vendor are fully compatibile with mediatek. but you can try. flashing system don't damage the bootloader. so you can reflash easy stock in case of problems
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You tried it first???

no... my phone is 3 days old. First i want to test miui. and i think this phone will recive miui 13. so at now i don't want to do heavy modding. only debloating. i like miui. aosp rom have bored me. on my old mi A3 i have try many gsi also android 12 beta. but mi a3 is not an mtk phone. so the only way to know if gsi works is try. i'm quite sure that many gsi will boot. i think the gsi much compatible are note 8 ported

Installed android 12 gsi via dynamic system update. Requires a unlocked bootloader.
Note that my phone has dm-verify corrupt on boot, but still works. The dsu loader seems to be functional. You would have package custom gsi's to load via dsu.
But being able to duel boot std ROM + gsi ROM is a win

Auswolf said:
Installed android 12 gsi via dynamic system update. Requires a unlocked bootloader.
Note that my phone has dm-verify corrupt on boot, but still works. The dsu loader seems to be functional. You would have package custom gsi's to load via dsu.
But being able to duel boot std ROM + gsi ROM is a win
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Can you try to flash only gsi ROM?

if dsu work well, is the best safe way to try a12. great tips!!!!! sometimes gsi are not fully compatible with vendor. and in particular MTK devices are not modding phones. 99,9% of dev hare on snapdragons. maybe if xiaomi will launch more mtk devides out of China, the situation could change. But in my opinion MIUI don't need to be modded. only debloated and unlocked. Our phone sure will recive miui13 based on A12. I have tryed aosp beta, and the dynamic theming is a fantastic function. implemend on miui will make this rom super cool

Generic System Image (GSI) list
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com
Installed phusson's AOSP using the dsu loader.

Auswolf said:
Generic System Image (GSI) list
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com
Installed phusson's AOSP using the dsu loader.
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nice! connect to nippon gsi. there is a lot of gsi. of all major custom rom. and also miui

Auswolf said:
Generic System Image (GSI) list
Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.
github.com
Installed phusson's AOSP using the dsu loader.
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But I want only 1 boot not dual boot

use command fastboot flash system... or via twrp (twrp touch don't work but you can use twrp manager in pc terminal with phone connected via usb). internet is full of guide how to flash gsi via twrp. if you like aosp rom try android 12 beta. or dot os. new 5.2 is out. the system ui is very cool. and official gsi for all android go out soon

wetito said:
use command fastboot flash system... or via twrp (twrp touch don't work but you can use twrp manager in pc terminal with phone connected via usb). internet is full of guide how to flash gsi via twrp. if you like aosp rom try android 12 beta. or dot os. new 5.2 is out. the system ui is very cool. and official gsi for all android go out soon
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Can you try I don't want to brick my phone

oh no! my phone is 3 day old and i love miui. it's impossibile damage bootloader flashing a generic system img. you have alreagy unlock bootloader. if phone dont dont boot you can easily reflash stock via miflash. i will bootloader only when xiaomi will stops major updates. i post my news only for user that live aosp roms

wetito said:
oh no! my phone is 3 day old and i love miui. it's impossibile damage bootloader flashing a generic system img. you have alreagy unlock bootloader. if phone dont dont boot you can easily reflash stock via miflash. i will bootloader only when xiaomi will stops major updates. i post my news only for user that live aosp roms
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My bootloader still not unlocked ._. but I bricked my phone just putting it in fastboot mode

it's obviously! before flash any non stock roms, bootloadermust be unlocked! this is the base of modding

wetito said:
it's obviously! before flash any non stock roms, bootloadermust be unlocked! this is the base of modding
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wetito said:
it's obviously! before flash any non stock roms, bootloadermust be unlocked! this is the base of modding
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Click to collapse
My phone bricked after going to fastboot and DM verify corrupted
wetito said:
it's obviously! before flash any non stock roms, bootloadermust be unlocked! this is the base of modding
Click to expand...
Click to collapse

Fire1511 said:
My phone bricked after going to fastboot and DM verify corrupted
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because you flashed a bad full rom with boitloader locked. i suppose a china rom. all guide are clear "Unlock bootloader before"
using a gsi is safe to prevent big damage. because flash only system partition. probably you didn't read guide with attention. modding must do carefully. i suggest you reflash stock in edl mode. is the only solution

wetito said:
because you flashed a bad full rom with boitloader locked. i suppose a china rom. all guide are clear "Unlock bootloader before"
using a gsi is safe to prevent big damage. because flash only system partition. probably you didn't read guide with attention. modding must do carefully. i suggest you reflash stock in edl mode. is the only solution
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I don't flashed anything lol

Fire1511 said:
I don't flashed anything lol
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you said "my phone is bricked after going to fastboot". it can happen only if you have made a mod. like a no stock recovery or a non stock rom. or you said a lot of stupid claims

wetito said:
you said "my phone is bricked after going to fastboot". it can happen only if you have made a mod. like a no stock recovery or a non stock rom. or you said a lot of stupid claims
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Click to collapse
I went to fastboot fastboot

(SOLVED) Unable to flash GSI roms on A600FN (Android 10)

The only GSI rom that used to work on my phone was Resurrection Remix Q (8.6.5). Now none of them work. When I flash Android 10 GSIs (A/B A64 vndklite ofc) they only get to the loading screen and they stay there. Android 11 roms don't even boot up. Is there any way to get GSI roms working? FYI, I tried everything (well, almost) to make it work. I tried booting with and without Magisk, I tried flashing with and without GAPPS, I even flashed an ARM64 Treble vendor, and none of it works.
Edit: I'm gonna try flashing a stock Android 11 vendor. I'm gonna keep y'all up to date.
Edit 2: It worked. I managed to install dotOS R 5.2 along with Magisk 24.3 with absolutely no issues.

are there any bugs on gsi rom what works and what doesnt work