Downgrade from MIUI 12.5 Android 11 possible? - Xiaomi Mi 9 SE Questions & Answers

Has anyone done this without issue
Unlock bootloader -> flash older Android 10 rom with Mi Flash?
Or is it not possible due to anti rollback?

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can I flash magisk on a new phone with anti rollback

I just got this phone and I read up on anti rollback scary stuff can I flash Magisk on the default MIUI ROM?
yep no problem
Drysauce said:
I just got this phone and I read up on anti rollback scary stuff can I flash Magisk on the default MIUI ROM?
Click to expand...
Click to collapse
they are different stuff. antirollback means MIUI only. if you in say miui 10 1.001 and you downgrade to miui 9 9.6.17.0 that will brick phone.. ARB3 and ARB4 ARB3 from miui 9 9.617.0 to 9.640 is ARB3
from miui 9 9.6.19.0 up till miui 10 1.0.2. is ARB4 you dont want to downgrade from 4 to 3.
magisk its totally safe.

Downgrade to an old xiaomi.eu rom without triggering Rollback Protection

Dears,
I have a Xiaomi Redmi Note 5 (Global) with
MIUI Global 9.5.19.0 on Android 8.1
--> so the Rollback Protection is ENABLED
and I would like to flash a xiaomi.eu ROM. Specifically I would like to downgrade the device to version MIUI 9.3 8.3.1 based on Android 7.1.
Is it safe? Can I proceed without triggering the rollback Protection?
Thanks in advance
pcexpertblog said:
Dears,
I have a Xiaomi Redmi Note 5 (Global) with
MIUI Global 9.5.19.0 on Android 8.1
--> so the Rollback Protection is ENABLED
and I would like to flash a xiaomi.eu ROM. Specifically I would like to downgrade the device to version MIUI 9.3 8.3.1 based on Android 7.1.
Is it safe? Can I proceed without triggering the rollback Protection?
Thanks in advance
Click to expand...
Click to collapse
its not safe. you can but you need to modify some files to make that particular rom version fwless.
search there are like 2 threads that tells you how to make rom FW-LESS

Question about Mi Flash

Ok so i have the lastest 10.2.1.0 Android Pie, can i Mi Flash the lastest Global Beta 9.3.21 without problem?
first unlock the bootloader
I have the same doubt.
My fear is in relation to the ARB, if it can be started.

Is there a guide on how to downgrade from miui 11 to miui 9 ?

Hello , I want to downgrade from miui 11 to miui 9 to get the wifi repeater found in miui 9 else if there is any custom rom that have that option I'll be glad if I get some help , thank you all .
rasty01 said:
Hello , I want to downgrade from miui 11 to miui 9 to get the wifi repeater found in miui 9 else if there is any custom rom that have that option I'll be glad if I get some help , thank you all .
Click to expand...
Click to collapse
first you need to know what antirollback you have. you cannot downgrade from ARB4 to ARB3 if you on ARB4 then research if the last miui 9 its also ARB4 if both are then just flash using miflash
check here
https://piunikaweb.com/2019/05/13/m...it-super-easy-to-get-xiaomi-phones-arb-value/
then using fastboot rom and mi flash.
according to this.. (9.5.19 update enables Anti Rollback Protection, ARB = 4 ) so just research and be sure it does
https://c.mi.com/thread-1814760-1-0.html

Question Can I Downgrade from Miui EU 14 to 12

Hello. Currently Iam on Miui EU 14. Is it safe to download the Miui EU 12 and flash it with TWRP? Will I get bricket?
I lost a Redmi Note 5 few years back doing this Rsrsrs... ARB thing
If it's custom miui. You should be fine.
It is safe to downgrade to 12
mogamycool said:
It is safe to downgrade to 12
Click to expand...
Click to collapse
I'am still on MIUI 12.5 the way it came delivered.
Use stock miui12 rom with mi flash for no risk, mi flash errors can be fix easily....search google for accurate resuls
Then flash your desired custom Rom

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