Can I re-lock bootloader in miui 12 ported rom? - Xiaomi Redmi 4X Questions & Answers

Can we lock bootloader in miui 12 ported rom? Is it possible?

No, you cant. bootloader can only be locked in official version.

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Is it possible to go from MIUI 9 Beta to Stable without unlocking the bootloader?

Hi. I have a Mi5 and I'm using MIUI 9 Global Beta 8.3.29 . Is it possible to change the ROM to MIUI 9 Global Stable without unlocking the bootloader? If yes, how?
I'm asking because I only found conflicting info while searching the web. Some say it's possible other say it's not.
I also tried to install a MIUI 9 Global Stable ROM using XiaomiTool but it gave me an error. (even though in XiaomiTool it said that I don't need the bootloader to be unlocked to be able to install it)
I'd appreciate it if someone could give me an answer. Thanks.
Ya data will be wiped update to latest developer edition then to stable latest

From Global to Developer Rom

Hello
i've a Mi 8 global version (locked bootloader, waiting the time to unlock) with the last Global Stable rom 10.0.2.0 (Oreo). I'd like to switch to the developer rom version (Pie) but i get an error and i can't do it. So the question is: can i come back to miui 9 latest stable rom and then swith to developer one? If yes, how? Thank you for the answers

best way to flash Global stable on a phone that came with China stable?

as title. started seeing discussions of people having issues installing global stable on a China phone. Thanks
unlock bootloader and then flash global rom by Mi flash
hiphopboy said:
unlock bootloader and then flash global rom by Mi flash
Click to expand...
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The ROM can be of a inferior vertion?
my mi 8 china version is miui 10.0.6.0(OEACNFH). am i safe to unlock bootloader and flash global rom?
jmoportugal said:
The ROM can be of a inferior vertion?
Click to expand...
Click to collapse
Download lastest
Isit safe to use XiaoMiToolv2 for this purpose? (including bootloader unlock)

Help me with antirollback issue with CC9 (pyxis)

My CC9 is currently on Stock MIUI 12.0.2.0 stable (QFCCNXM)
Android version: 10
I checked ARB via fastboot commant and got "anti:1"
My question is .... "is there any way to flash Android 10 based EU custom rom running MIUI 11.0.3.0 ?"
That means I want to downgrade from stock miui 12 (Android 10) to custom miui 11 (based on Android 10) or custom miui 11 (based on Android 9)
via TWRP.
Is this will cause hard brick?
Please, someone clear this confusion...
Hi.
Read this article: https://www.xda-developers.com/xiaomi-anti-rollback-protection-brick-phone/
You can safely downgrade the firmware version on this device.
brigudav said:
Hi.
Read this article: https://www.xda-developers.com/xiaomi-anti-rollback-protection-brick-phone/
You can safely downgrade the firmware version on this device.
Click to expand...
Click to collapse
Thanks for the response. I know how ARB works in switching official miui.
We can check the antiroll back index from fastboot rom image (from bat file) but since I want to move from an official miui12 to a custom xiaomi.eu miui11 so how can I check that xiaomi.eu rom's ARB index? because custom roms are recovery rom to to be flashed from within twrp. Is there a way to check ARB index of an recovery rom?
This is where I got confused that switching from official miui to a custom miui will still get affected by ARB or not...

Question Can I go from RKFINXM to RKFMIXM?

My Note 10 Pro (6/128+64MP) has MIUI version MIUI Global 12.5.8.0 (RKFINXM). The battery performance is not satisfactory. I saw a post saying the global 12.5.6.0 version is good on battery backup. So I want to try that out. Don't want to void my warranty now by flashing any custom ROM or unlocking bootloader too. So my question is can I go from RKFINXM to RKFMIXM?? Can I flash MIUI Global 12.5.6.0 (RKFMIXM)?? If yes, then how??
Yes, With MI official flash tool
You need to have unlocked bootloader.
For HOW TO, check google or youtube there is tons of guides for that it all the same just use the fastboot rom file of your device.

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