[GUIDE][alioth] How to install Xiaomi.eu ROM for Xiaomi Redmi K40


holowins

Members
Mar 2, 2018
3
13
Hi all,
does installing xiaomi.eu rom is impacting NFC payment (google pay, bank app etc) as bootloader need to be unlocked?
 

steelcow

Members
Apr 22, 2021
8
3
What if I want to revert back to older rom?eg. flash from V12.5.2 stable to V12.0.8 stable or weekly (newer) to weekly (older). Do I need to run update_rom script in older rom folder or first_install_with_data_format in older rom folder?

Sent from my M2012K11AC using Tapatalk
 

Poney70

Donator
Oct 3, 2019
3,559
322
What if I want to revert back to older rom?eg. flash from V12.5.2 stable to V12.0.8 stable or weekly (newer) to weekly (older). Do I need to run update_rom script in older rom folder or first_install_with_data_format in older rom folder?
"first_install_with_data_format" is always recommended when downgrading. ;)
 
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likwix

Members
Apr 11, 2021
4
3
Hello,

Today I tried to update my HMK40_POCOF3_ROM V12.0.8.0 --> HMK40_POCOF3_V12.5.2.0.RKHCNXM_v12-11-fastboot.
But I run into a bootloop in the recovery menu...

I'd like to avoid to loose my data storage...

[Edit]
I tried to downgrade back to V12.5.2.0, but I ran in the same issue
 
Last edited:

likwix

Members
Apr 11, 2021
4
3
Hello everyone!

So to solve that issue, I had first to reinstall the chinese ROM (MiFlash) V12.0.8.0 (the 12.5.2.0 didn't worked). I had some "no catch checkpoint" errors, but it eventually worked the 3d time (still with the same error, but it rebooted the system sucessfully). Then I updated the Chinese ROM --> V12.5.2.0 with the system updater. After that I've been able to reflash the EU ROM V12.5.2.0 (first install).

Now I've lost my user data :'(

How can I make sure to avoid such a pain in the future?
Will we be able to use the system update feature to update to the lastest EU ROM version?
 

ephestione

Members
Apr 23, 2021
8
3
My take is to keep the stable rom zip that I flashed until twrp is available and I can do a android backup, THEN I might play with updating the system.
Is there an equivalent of android that can be ran and restored with fastboot?
 

gogocar62

Members
Apr 22, 2021
16
5
my reason is to record calls, more features and MIUI 12.5 with xiaomi apps instead of google apps

The battery is not my problem.


I am sorry for my bad English
 
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