Hi everyone! I have a quick question for you
I wanted to know if these roms mess with the anti rollback feature. I know we can check our anti rollback level through fastboot (already done) but how can we check the rollback level of a rom which comes only as a recovery-type rom?
Googling around, it seems to be a problem of MIUI based roms only, am I right?
Thanks in advance
1)ARB comes in effect only when you're flashing the stock ROM, not when flashing the custom ROMs
2) ARB can be easily bypassed (see below)
Hence, it does not apply when you're switching from stock MIUI to Xiaomi.eu - Xiaomi.eu fastboot or recovery ROMs do not check for ARB
It could only apply if/when you would be switching back to stock MIUI
Then, you would have to use the so-called fastboot/tgz type of the stock ROM
However, do not plainly use MI Flash tool. Instead, un-tar and then un-gzip the tgz (= tar+gzip) archive and find inside three bat (Windoze batch) scripts (and similarly three sh scripts for the PC Linux users)
Check the names of those bat scripts.
Take the script that says "clean all" (you need Factory reset) but avoid "lock" (you can always re-lock later - if you already lock but make a mistake while flashing, you would hard-brick your phone)
Edit that script (eg, by Notepad).
First two lines check for the model and protect from flashing to the wrong model - leave those lines untouched
Then come four or five lines that check for ARB (and protect from rolling-back) - one does not need to be a programmer to recognize those lines
Simply remove those lines related to ARB and save the script
Then (just like when flashing Xiaomi.eu fastboot ROM type), manually run that edited bat script through Fastboot
And don't worry about. There many users who buy the phone with MIUI 10 and upgrade (by OTA) to stock MIUI 11 (or buy with MIUI 12 and upgrade to MIUI 13, etc), but then decide that they want to go back to the original MIUI (saying that only with the original MIUI their phones worked smooth and consumed less battery, etc) - they simply unlock BL and roll-back by the method as above
See eg:
By googling, you can find more guides describing the same method