Anti rollback check error - Redmi K20 / Xiaomi Mi 9T Questions & Answers

Hello guys i can't back to stock global rom with mi flash tools please someone help me how to fix this error

Me too Mi 9T
I have the same problem here, anyone managed to solve the problem?

I'm same

I also had this problem after flashing android 10 based custom rom via twrp and flashing stock rom back via mi flash tool. It was solved by below for me:
- First flash back android 9 based custom rom by twrp. Boot for first time. In my case, it was bootloop.
- Then, enter fastboot and flash stock android 9 rom with this mi flash tool beta. Find in this link. (mirom.ezbox.idv.tw/en/phone/davinci/)
- It was success for me.

Related

Help me Zenfone 2 laser ZE500KG Bootloop!!!!!

my zenfone 2 laser is bootloop! (ZE500KG)
I try flash file TWRP but I can't do that!
It say ''Failed'' > '' zip verification failed''
anyone know how to fix it faulty?
TWRP 3.0.2-0 (TeamWin) for zenfone 2 laser!
ALSO DO NOT FLASH WITH ADB! Help me. :crying::crying::crying::crying::crying:
Hey,I dont know if u found the answer yet
TWRP can just flash unofficial rom
not official rom
if you want official rom
you have to use oem recovery...not twrp
I m look for answer too...that is all i know
TWRP can install both Stock Or Custom Roms...it is based upon the update-script...
I had an issue where I could install any of the cyanogenmod 13 nightly updates past June 14th on my phone, a ze551kl. I resolved the issue by updating to the OEM ROM 21.40 from the Asus website. Hopefully this is helpful.
I downloaded the following files from the?*Asus website and copied them into the?*SD Card?*of my phone:
- UL-Z00T-WW-1.16.40.763-user.zip
- UL-Z00T-WW-1.17.40.1234-user.zip
- UL-Z00T-WW-21.40.1220-1615-user.zip
- UL-Z00T-WW-21.40.1220-1794-user.zip
I then used fastboot to install the stock recovery image. After installing the stock recovery, I rebooted into recovery mode and installed 1.16 and restarted the phone. After the phone booted into 1.16, I rebooted into recovery and installed 1.17, etc . . . until I updated to 21.40.1220-1794.
After the last update, I replaced the stock recovery with TWRP and l was able to install the latest nightlies. It seems like installing 21.40 was the key to fixing this issue.
An important side note : I downloaded the WW ROMs because my phone is a WW region. If your phone is from a different region, you will need to download the appropriate ROMs.
Good luck with your phone.

Need Help To Recover to Stock ROM

SOLVED: https://xiaomifirmware.com/roms/download-official-roms-xiaomi-mi-a1/
I rooted my Mi A1 and was on December 1st update.
So I had free time just now and decided to flash stock rom and update to December 2nd update.
As I was using Mi Flash tool to flash the ROM, it somehow stopped working and I don't think it flashed the ROM properly.
My phone has been in bootloop state since then with the bootloader unlocked warning screen.
Been trying to flash the ROM but Mi Flash tool kept stopped working randomly when I flash the ROM.
I tried the following with no outcome:
1) Boot into TWRP and factory reset
2) Boot into stock recovery and wipe data/factory reset
3) Flash stock ROM via Mi Flash tool (stopped working randomly, but it shows success flashing screen, just that the phone doesn't reboot)
4) Tried different version of Mi Flash tool (beta and non-beta), all stopped working randomly
5) Restarted my PC (still Mi Flash problem)
Extra info that might help:
As I am in TWRP, I can see that my phone internal storage is empty with only 1 folder (TWRP)
My bootloader is still unlocked till now
Have you tried flashing Jamflux's fastboot image of the oreo stable ROM?
Kamefrede said:
Have you tried flashing Jamflux's fastboot image of the oreo stable ROM?
Click to expand...
Click to collapse
No, how would that help?
I am not going Oreo yet, just Nougat December 2nd update is fine
SOLVED: https://xiaomifirmware.com/roms/download-official-roms-xiaomi-mi-a1/
Raven_Yen said:
No, how would that help?
I am not going Oreo yet, just Nougat December 2nd update is fine
Click to expand...
Click to collapse
Ah, you didn't specify in the post that you wanted to keep nougat so I thought you wanted the latest haha.
Anyway, good to see that you figured it out

Mi flash flashing compelets in 0second

Hi,
Yesterday I am flashing stock room on mi a1
Now I am on miui 10 (pacoraca built).
When I flash by using mi flash tool then it completes in 0s.
I changed rom location to C drive but still same issue.
Please help........
Too little information. Bring out every step you did and what problems you encountered in detail.
manpildo said:
Too little information. Bring out every step you did and what problems you encountered in detail.
Click to expand...
Click to collapse
*I wanted to comeback from custom rom to stock rom.
I decided to flash the fastboot ROM from the website and get it flash via Miflash.2017 07 20
Miflash finishes the process in 1 second and does nothing. Neither does running the script directly.
I moved both the image folder and miflash folder to the desktop. Mi flash still didn't work

Mi 9T Soft Brick ? Antiroll back need help

Good day i have a problem with my mi 9t. I have installed the miui 11 eu version on my phone and i was using it for a few weeks. I have decided i want to go back to miui 10 global but when i go to flash the rom with mi flash tool i get antiroll back error as seen in the image on this post. I have tried to install via TWRP chinese recovery but the phone shows the logo for a few seconds and then goes straight to the TWRP recovery automatically. I tried installing havoc os pie still same problem. I was reading up about the anitroll back that the miui eu has and i think that the phone is soft bricked because i tried flashing via twrp with anitroll back on my phone. I did the anitroll back test to get the index and i have a antiroll back index of 1. If anyone can help me with this problem or have the solution please give me some help. Thank You
I am able to get into twrp recovery but any rom i flash just reboots back to twrp recovery
Ok I fixed it I just flashed back the miui 11 eu I was using before and it boots up but now I want to flash the new miui 11 global but I'm afraid it may brick again. Only one way to find out.
Have a same problem, what version eu rom work in your MI9T

How to Go back to MIUI 10 From MIUI 11 ?

For some reason I didnt like the MIUI 11... and have some bugs also.. i like the miui 10... can anyone help me how to downgrade to miui 10 (10.3.6.0) ROM... any help will b greatly appreciated.
do i need to unlock Bootloader to downgrade ?
Can i downgrade to miui 10 via copying the MIUI 10 ROM in root directory of internal storage and flash it via setting>about phone?system update> select the rom zip and update ?
I would also like to downgrade back from Miui 11 to Miui 10 as it is far too buggy, random lockups, phone heats up/drains fast and needs rebooting every few days to fix, VoLTE no longer works on 2nd SIM.
I can't seem to download the Miui 10 latest stable ROM from en.miui.com as it only shows link for Miui 11 for my phone, can anyone help with the latest stable miui 10 download link?
MI9T has anti-rollback enabled, which means either you have to use Mi Flash, edit scripts inside .tar (stock firmware meant to be flashed through fastboot) and flash it, or unlock bootloader, flash twrp and install MIUI 10 zip.
How do you do that for Mi 9T?
How do you do any of what you said? I have mi 9T also like previous dude off xiaomi site my phone only has 11 to install as a room? Not 10..
mrp56 said:
I would also like to downgrade back from Miui 11 to Miui 10 as it is far too buggy, random lockups, phone heats up/drains fast and needs rebooting every few days to fix, VoLTE no longer works on 2nd SIM.
I can't seem to download the Miui 10 latest stable ROM from en.miui.com as it only shows link for Miui 11 for my phone, can anyone help with the latest stable miui 10 download link?
Click to expand...
Click to collapse
Done ! Unlock Boot loader (after Waiting 72 Hours), downloaded fastboot ROM 10.3.6 (MIUI 10)... FLASHED it via MI FLASH tool... after flashing I RELOCKED boot loader.
info2shail2010 said:
Done ! Unlock Boot loader (after Waiting 72 Hours), downloaded fastboot ROM 10.3.6 (MIUI 10)... FLASHED it via MI FLASH tool... after flashing I RELOCKED boot loader.
Click to expand...
Click to collapse
Where did you download it from, I could only find 11?
info2shail2010 said:
Done ! Unlock Boot loader (after Waiting 72 Hours), downloaded fastboot ROM 10.3.6 (MIUI 10)... FLASHED it via MI FLASH tool... after flashing I RELOCKED boot loader.
Click to expand...
Click to collapse
Can you please upload the zip somewhere ? cant find the file for my mi9T

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