Downgrade without wiping data - Xiaomi Mi A1 Questions & Answers

im on latest may patch, can i downgrade to april without wiping my data?

darkzero1125 said:
im on latest may patch, can i downgrade to april without wiping my data?
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Accept you are on stock. ?

darkzero1125 said:
im on latest may patch, can i downgrade to april without wiping my data?
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yes, you can, but I did exactly the opposite and upgraded to the latest oreo beta after extracting the images with payload_dumper.py but system.img can't be flashed due to a "sparse image magic error" (sparsecrclist.txt missing?).
however now the battery life is amazing and the device runs pretty smooth though I'm still on oreo 8.0.
therefor I edited the flash_all.bat script from tissot_images_V9.5.11.0.ODHMIFA_8.0.
edit: prepared a download for lazy people which includes even a (magisk) patched_boot.img (I suggest to use fastboot boot patched_boot.img):
https://mega.nz/#!7WARiKaS!bEEUJzxxR2QtbqpVK5C0aUW3i2wrFIrnL7zZ3dn3Ghw
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Related

OTA rolling out for non-Prime R1 HD (B12, VoLTE)

I also captured the OTA from the /sdcard, which I'm currently uploading and will share.
Screenshot
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Here is the OTA if anyone's interested: update.zip.
preloader
Has anyone tried accepting the update yet? Can you confirm if it locks the preloader like the v6.6 prime update?
wbxp99 said:
Has anyone tried accepting the update yet? Can you confirm if it locks the preloader like the v6.6 prime update?
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Yes it does
Stuck in logo boot loop on my non-prime phone... I had even made a ROM_FULL SPFT backup but it appears the OTA disabled the ability to use SPFT. I get an error S_BROM_DOWNLOAD_DA_FAIL. Did full wipe, nothing works.
Relock the bootloader.
shawnchalfant said:
Relock the bootloader.
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lock failed - Err:0xffffffff
However running unlock again succeeded and I could flash boot.img. Now installation of magisk and phh superuser under twrp appears to work but the device is not rooted. Not sure if something changed or broke root.

Stuck on bootanimation after OB3 update | Data Loss

Hello,
I recently updated to OB3 update on Oneplus 5.
Phone stuck on bootanimation for 30 minutes. I restarted it, same result !
Went into stock recovery only to see all data gone , some random folders are showing (check attachments).
Immediately flashed TWRP.
I have not tried anything as of yet so as to preserve data.
I have access to ADB , recovery(blu_spark's TWRP) and fastboot.
Please tell me how to proceed and save the data.
Link https://imgur.com/kh4igMY
Pic :-
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itzcoke13 said:
Install stock recovery, flash stable OOS 5.0 (using adb sideload) and wipe cache (this worked for me)
PD: Sorry for my English
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What about this guide ??
GUIDE
Is it any good ? Seems to be doing very good for people out there.
My concern is guide says Stable N --> Stable O
I was on Open Beta.

OTA is not working: installation problem.

I've flashed the latest stock rom on my a1,
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flashing process was successful, however, security update (via OTA - 58.3MB) is not working due to installation problem.
Is there anybody who fixed this issue?
Thanks.
Lock bootloader again.
System can't install update while bootloader is unlocked.
cukierkas said:
Lock bootloader again.
System can't install update while bootloader is unlocked.
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BS. OTA can be installed with unlocked bootloader perfectly fine. Also keep in mind that after May update, bootloader unlocking will erase all your data.
Thanks.
_mysiak_ said:
BS. OTA can be installed with unlocked bootloader perfectly fine. Also keep in mind that after May update, bootloader unlocking will erase all your data.
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I've tried again with all my wishes, then worked. Still now, I don't know the reason why. Thx anyway.

[a207F] Rooting?

After a few failed attempts and some net digging, i decided to downgrade my firmware to an early android 9 that i grabbed from samlabs.
i figured from this "workaround" that i can finally get magisk working with my device
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but due to my limited knowledge, i don't exactly know what he mean't here, like... how do i flash something with a odin tarball???
and how do i even extract the files mentioned?
can anyone lay it to me straight?
Github Thread
PS: my bootloader is already unlocked, i tried the simple method that makes sense to me and just flashed a patched AP of the aforementioned Firmware but unfortunately hit
the usual dead end (Secure check fail, recovery.img).
Note that the bootloader with Android 10 and later on the Samsung Galaxy Tab A 8.0 (2019) [SM-T290] is suffering from this same issue.
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It is about a different device, but may work.
Just replace the aboot.mbn.lz2 and vaultkeeper.mbn.lz2 in a tarball (.tar file) with aboot.mbn.lz2 and vaultkeeper.mbn.lz2 from last Android 9 tarball (.tar file)
I don't remember which one contains these files, so find one with them

Question Slot A unbootable

Hi all, I am trying to get my Nothing update to 1.1.3, I did restore image in magisk -->(didn't press reboot), then download the OTA update --> (didn't press reboot as well), lastly I used the install to inactive slot(After OTA) --> (pressed reboot), so according to what I know my phone should now boot into partition A since I am currently in partition B. After reboot, I found my device is still in 1.1.2, my partition A is become unbootable. Anyone got an idea any approach I can do? Thankyou.
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switch to partition that boots and do local update to 1.1.3
see how to install via Local System Update wizard
gwolfu said:
switch to partition that boots and do local update to 1.1.3
see how to install via Local System Update wizard
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Oh can I do this if I am rooted?
layz1319 said:
Oh can I do this if I am rooted?
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while in theory, yes, I would restore stock boot.img and do it then

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