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TWRP flashing problem in Android P

I successfully unlocked the bootloader and rooted my Mi A2 using the patched boot img method (flashing the patched boot image with Magisk to root). But now I want to install a custom ROM and for that, I need to install TWRP. I tried to find a lot in forums but couldn't find any help with Android Pie as TWRP doesn't decrypt storage in Pie. So can somebody help this newbie with flashing TWRP in my rooted Mi A2 with Android Pie.

Follow this https://forum.xda-developers.com/mi-a2/how-to/guide-how-to-flash-custom-roms-stuff-t3876375

poran123 said:
Follow this https://forum.xda-developers.com/mi-a2/how-to/guide-how-to-flash-custom-roms-stuff-t3876375
Click to expand...
Click to collapse
So what I think I have to do is to go to fastboot mode and boot recovery.img, after that, I need to wipe everything (will lose my root and stock ROM) and then it will act like how it would from the guide by flashing the custom ROM, and then changing slots and stuff.

(flashing / booting) Problems with all roms

Hi,
since many days I have a new Mi8.
The device is a chineese model, and because it was delivered with unlocked bootloader and a shop ROM, i want to use the latest Xiaomi.eu stable rom.
After flashing the TWRP, i cleared all (System, Data, Cache, internal storage) and installes the latest xiaomi.eu ROM.
Unfortunately the ROM was notstartet. Later i readed, that the xiaomi.eu ROM needs the system partition, so i tried to install some different ROMs.
All tested roms failed to install (device missmatch), so i tried to use different recoveries and at least i updated the vendor Image to MI8Global_V10.3.5.0.PEAMIXM.
After this, some Roms are able to install, mut the ROMs wont boot.
After a clean install of the xiomi global fastboot image, the phone is running, but i still have problems to install custom ROMs or the stable Xiaomi.eu ROM.
The fastboot ROM installation with mi flash tools ends with an error (Not catch checkpoint (\fastboot -s .*lock) Flash is not done (I choosed the option clean all, not the lock function)
cDroid Rom is working, but with this ROM i cant use google pay.
cDroid with update to xiaomi.eu weekly is also working, but also without google pay.
Xiaomi.eu stable - bootloops
Do you have any ideas why i cant use all ROMs?
Should i choose a chineesevendor image or something else?
I also heared, that it could be, that the device bricks, when i try to re-lock the bootloader, is this an option?
Which ROM should work fith functional google pay ?
Thanks in advance

The problem seems to be solved,
i have to flash "Disable_Dm-Verity_ForceEncrypt" after the flashing of every ROM, then I have no bootloops / boot Problems.
Now i only have the problem with google pay...

I couldn't also get Miui Eu bootable on my mi8 last time. I didn't realize what you had mentioned Disable_Dm-Verity_ForceEncrypt. But I could manage to get MiRoom Miui workable and it seems ok for now.

stevedat said:
I couldn't also get Miui Eu bootable on my mi8 last time. I didn't realize what you had mentioned Disable_Dm-Verity_ForceEncrypt. But I could manage to get MiRoom Miui workable and it seems ok for now.
Click to expand...
Click to collapse
DM verity zip removes the 'DM Verity' check that looks for modifications to the boot partitions (D-device M-mapper). You cannot boot with modifications (like root) without disabling the verity check. Also, if you are on a stock ROM, your custom recovery image file will be overwritten with stock upon reboot if you don't disable DM Verity. Hope this helps you understand more.
Found it on this topic.
I´m still looking for a ROM with google pay support, but iu think with unlocked bootloader and without root therre is no chance...

Sensors stopped working - even after persist flash

So i already did some searching, but nothing yet, maybe i' m overlooking something
Soi did a full recovery with mi flash tool, no dice, then took the persist out of it and flashed it with twrp, no dice, so now i reverted back to Lineage since i can't stand MIUI, but yeah, now i still don't have sensors running
The fastboot image i used is 11.8, which is the euro image as far as i know (got my device here in europe), is there something i'm completely overlooking?

Had this issue with my Pixel Experience rom - do sensors work in Miui? If so, perhaps your method of flashing is dodgy/ the rom has issues.

Flash the permissive zip. It happens sometimes when it's set to enforcing. People were talking about it on Syberia 3.6 post, check it out, there's a link to download there.

I had this same issue as well. I solved it by reflashing back to stock with MiFlash tool and using V11.0.5.0 Stock MIUI ROM.
After that boot the phone and go through the initial phone setup process.
Then you can flash TWRP Recovery (twrp-3.3.1-0-cepheus.img).
In TWRP flash vbmeta.img. After that you can flash and boot your Custom ROM with sensors working.
Do not flash any other firmware file in TWRP. I have seen other ROM threads mentioning the need to flash a fw file but don't do that.

Redmi Note 9 Bootloop to recovery - help needed

Hi all,
I have a rooted redmit note 9 that was running the stock rom (EU version i believe as i am UK based) perfectly well for several months until today when then latest over the air update installed and my phone is now stuck in a bootloop where i can only access the custom PBRP recovery (installed from when i rooted previously). I can also access fastboot. I have tried wiping all data and cache etc, i have tried reflashing the magisk patched stock rom that previously worked, i have also tried flashing vbmeta that i flashed previously but still no luck. This is my only phone so I really need to get it working again.
I was about to try re-flashing the stock rom with SP tool but it tells me the scatter file is invalid.
Not sure what else to try now. I also note that when i PBRP loads up it always asks for a password however i dont have a password on the device.
Please could someone suggest something i could try?

ajadamjones87 said:
Hi all,
I have a rooted redmit note 9 that was running the stock rom (EU version i believe as i am UK based) perfectly well for several months until today when then latest over the air update installed and my phone is now stuck in a bootloop where i can only access the custom PBRP recovery (installed from when i rooted previously). I can also access fastboot. I have tried wiping all data and cache etc, i have tried reflashing the magisk patched stock rom that previously worked, i have also tried flashing vbmeta that i flashed previously but still no luck. This is my only phone so I really need to get it working again.
I was about to try re-flashing the stock rom with SP tool but it tells me the scatter file is invalid.
Not sure what else to try now. I also note that when i PBRP loads up it always asks for a password however i dont have a password on the device.
Please could someone suggest something i could try?
Click to expand...
Click to collapse
your devices is encrypted try flash other custom rom first then try revert to stock hope it help u out

Thanks very much for your response. Based on your advice i tried to flash the latest Kraken 11 Vanilla rom from this fourm, however after installing via TWRP now i can't even get into recovery anymore, just goes straight to fastboot.
Any other suggestions please?

I have now managed to get back in to TWRP and tried flashing lineage latest rom but still i am stuck in a boot loop taking me to fastboot this time.
Please can someone help suggest hwo i can get my phone working agian. At this point i dont care which rom i end up (custom or stock) with as long as i can get it to function again

If your device is rooted, you can NOT update the system using the OTA (over-the-air), or the device will be stucked in bootloop.
If your device is rooted, you need to update the system MANUALLY, using the fastboot or spflashtool.
I suggest to update the system using the fastboot.
Now, you need to flash the whole MIUI again, except userdata and you will have your device back.

For anyone with a asimilar problem i eventually managed to fix my issue by using miflash tool version 20180528 and flashing merlin_eea_global_images_V12.0.10.0.QJOEUXM_20210413.0000.00_10.0_eea_c4a9d5d7fc fastboot version which i downloaded from the xiami site.
I had to try this multiple times because the extraction of the file did not seem to be correct on the first attempts.

Question Help - Fingerprint and compass sensors not working

I tried to root my phone. Now the fingerprint and compass sensor not working.
I think I messed up with persist.img
I tried flashing stock rom through MSMtool, flashing persist through fastboot, nothing works.
Sensors not working woith AOSP rom too.
Can you share your persist.img?
Can someone tell me how should I proceed?

Device info, PCB ?
How did u do it ?

Product ID 20711
Unlocked bootloader with in-depth testing tool.
Then patched boot.img with magisk and flashed through fastboot.
Fingerprint and compass gone.
Then flashed entire rom with fastboot. Some partitions succeded, some partitions failed (Error: critical partition cannot be flashed)
Then tried MSMtool, and flashed edl rom.
Tried flashing AOSP GSI rom.
All in vain. Fingerprint and compass not working.
Could you share your persist.img? I'll try flashing it.
Any other advice?

Phone RMX3081, GDPR of EXPORT (Guess Export) NV ?
Code:
You are not the last one. In new version of the script for the persist image won't be replaced !
Update backlist to preserve persist.img by rapperskull · Pull Request #14 · italorecife/OppoRealme-OFP-Flash
Update backlist to preserve persist.img Enforce blacklist for both partitions on A/B devices
github.com
I have locked bootloader and GDPR, the original from ofp is not good

Do you have latest .C20 or .C21 ?
Check https://realmefirmware.com/realme-firmware-update/

I installed C21