Changing Base ROM - Redmi Note 9S / Note 9 Pro (Indian Model) Question

hello community!
i wanna ask, if i currently using ID/IN roms (indian/indonesian) ROM, can I unlock the bootloader, switch to EU roms and then lock the bootloader back?
i wanna use miui.eu roms with bootloader locked. is it possible tho?
any suggestion appreciated.

yhogievo said:
hello community!
i wanna ask, if i currently using ID/IN roms (indian/indonesian) ROM, can I unlock the bootloader, switch to EU roms and then lock the bootloader back?
i wanna use miui.eu roms with bootloader locked. is it possible tho?
any suggestion appreciated.
Click to expand...
Click to collapse
Hello
Answer is NO
Because You have to flash a fastboot official rom via MIFLASH tool in order to relock the bootloader. That will erase EU rom....

Related

Unofficialy unlocked bootloader

What makes the bootloader lock itself when flashing firmware on unofficially unlocked bootloader?
I have found some firmware which remove emmc_appsboot.mbn, but according to other users you need to update that too.
So what I want to know is what happens when I flash a firmware with emmc_appsboot.mbn removed. Will it be the same as when officially unlocked phones flash a firmware with emmc_appsboot.mbn?
Is there any downside to removing emmc_appsboot.mbn?
oggew2 said:
What makes the bootloader lock itself when flashing firmware on unofficially unlocked bootloader?
I have found some firmware which remove emmc_appsboot.mbn, but according to other users you need to update that too.
So what I want to know is what happens when I flash a firmware with emmc_appsboot.mbn removed. Will it be the same as when officially unlocked phones flash a firmware with emmc_appsboot.mbn?
Is there any downside to removing emmc_appsboot.mbn?
Click to expand...
Click to collapse
emmc_appsboot.mbn is the bootloader. If you did not remove that, it will flash a Marshmallow bootloader. The problem is it will relock your bootloader if you're on Lollipop bootloader. Doing the unofficial unlock method means you're on Lollipop bootloader.
Relocking your bootloader while not on MIUI could be a problem so don't flash any firmware with emmc_appsboot.mbn if you've unlocked unofficially. Right now no one knows a method to update to MM bootloader without unlocking officially.
Latest Lineage OS(and those based of of it) needs Marshmallow bootloader to work(otherwise bootloop).
Try official unlock Just wait for one week after applying. Because you will always need the latest firmware to work smoothly on any custom rom . Using patch emmc_appsboot.mbn will keep you stuck at the old miui rom only
abhishek227 said:
Try official unlock Just wait for one week after applying. Because you will always need the latest firmware to work smoothly on any custom rom . Using patch emmc_appsboot.mbn will keep you stuck at the old miui rom only
Click to expand...
Click to collapse
I did try Official unlock alot of Times, but it never worked for me so I unlocked unofficially instead. Is there any rom you need to be on? Live dev miui or something?
bloodytolits said:
emmc_appsboot.mbn is the bootloader. If you did not remove that, it will flash a Marshmallow bootloader. The problem is it will relock your bootloader if you're on Lollipop bootloader. Doing the unofficial unlock method means you're on Lollipop bootloader.
Relocking your bootloader while not on MIUI could be a problem so don't flash any firmware with emmc_appsboot.mbn if you've unlocked unofficially. Right now no one knows a method to update to MM bootloader without unlocking officially.
Latest Lineage OS(and those based of of it) needs Marshmallow bootloader to work(otherwise bootloop).
Click to expand...
Click to collapse
Is there any way to check what bootloader or Firmware your on?
oggew2 said:
I did try Official unlock alot of Times, but it never worked for me so I unlocked unofficially instead. Is there any rom you need to be on? Live dev miui or something?
Click to expand...
Click to collapse
I have unlocked successfully within a week . I was on latest china dev rom . after getting permission I was facing 50% stuck I waited for 1 week and then tried and was successful. just keep in mind to turn on find device on mi cloud.
oggew2 said:
Is there any way to check what bootloader or Firmware your on?
Click to expand...
Click to collapse
You can't check what bootloader you have but if you did the unofficial unlock then you're definitely on LP bootloader.
Firmware is whatever the last MIUI ROM or standalone Firmware you've flashed.
You needed to be on latest MIUI dev to unlock officially.
If you're on Kate though, then doing this doesn't seem to cause problems when flashing the latest LOS. Can't guarantee the same for kenzo though.
How to flash latest miui on UL LP bootloader
I've unlocked my bootloader unofficially and can't flash any new ROM. How can i go back to MIUI to get MM bootloader without any problem of boot loops?
sushiltater said:
I've unlocked my bootloader unofficially and can't flash any new ROM. How can i go back to MIUI to get MM bootloader without any problem of boot loops?
Click to expand...
Click to collapse
On Which miui rom version u unlocked ur device ?
Why u cant flash custom roms ? What error ?
naik2902 said:
On Which miui rom version u unlocked ur device ?
Why u cant flash custom roms ? What error ?
Click to expand...
Click to collapse
Miui 7, no error while flashing, but no boot up, stucks with boot animation.
Sent from my ONEPLUS A5000 using Tapatalk
Adv_Sushil_Tater said:
Miui 7, no error while flashing, but no boot up, stucks with boot animation.
Click to expand...
Click to collapse
Official or unofficial unlocked?

Locking the unofficial bootloader!

Hello guys,
how to flash official miui over custom rom so that I can lock my bootlaoder that I unlocked unofficially and again unlock it by official way.
Please suggest any safe method.
Even if I loss Twrp.
dean [email protected]# said:
Hello guys,
how to flash official miui over custom rom so that I can lock my bootlaoder that I unlocked unofficially and again unlock it by official way.
Please suggest any safe method.
Even if I loss Twrp.
Click to expand...
Click to collapse
Download fastboot rom, global developer http://en.miui.com/a-234.html
Unpack with winrar, and flash in fastboot mode using Miflash.
bro,Just this only.
Is it safe method
dean [email protected]# said:
bro,Just this only.
Is it safe method
Click to expand...
Click to collapse
Yes

About Flashing Rom,Kernel,Bootloader

1/Recently I Have Flashed Radon Kernel on my kenzo on dot os.now i want to know that if i flash another rom then, does i need to go stock kernel??or can i flash any rom using this kernel?
2/i had officially unlocked my bootloader, now i don't want to relock my bootloader again.so what kind of chances to relock bootloader? i am on oreo,if i flash mm based rom or global rom then is it will relock my bootloader again?
thnx guyz.
Asrafull said:
1/Recently I Have Flashed Radon Kernel on my kenzo on dot os.now i want to know that if i flash another rom then, does i need to go stock kernel??or can i flash any rom using this kernel?
2/i had officially unlocked my bootloader, now i don't want to relock my bootloader again.so what kind of chances to relock bootloader? i am on oreo,if i flash mm based rom or global rom then is it will relock my bootloader again?
thnx guyz.
Click to expand...
Click to collapse
For offical unlocked bootloader they won't get locked again

How to return to stock ?

Hi,
I have 2 RN3P, both running a custom rom.
One has an unlocked bootloader and another has a locked bootloader.
I'm looking to sell these phones.
I would like to know how can I return to a COMPLETELY stock rom, meaning NO TWRP, locked BL, etc.
I'd prefer not triggering ARB.
Could anyone please tell me which firmware to flash and which method to us ? TWRP or MiFlash ?
I'm ok with using an older firmware too, I just need to return the phone to factory condition.
Thanks for any help.
camlin said:
Hi,
I have 2 RN3P, both running a custom rom.
One has an unlocked bootloader and another has a locked bootloader.
I'm looking to sell these phones.
I would like to know how can I return to a COMPLETELY stock rom, meaning NO TWRP, locked BL, etc.
I'd prefer not triggering ARB.
Could anyone please tell me which firmware to flash and which method to us ? TWRP or MiFlash ?
I'm ok with using an older firmware too, I just need to return the phone to factory condition.
Thanks for any help.
Click to expand...
Click to collapse
Flash fastboot rom latest using miflash on pc.
naik2902 said:
Flash fastboot rom latest using miflash on pc.
Click to expand...
Click to collapse
Won't that also update bootloader which would change the arb status ?
Or is there a non-arb firmware available ?
camlin said:
Won't that also update bootloader which would change the arb status ?
Or is there a non-arb firmware available ?
Click to expand...
Click to collapse
What is ARB ?
Download and Flash this fastboot stable rom for kenzo .
For unlocked bootloader u can flash using mi flash and fastboot mode.
For locked bootloader u need to put phone in EDL mode and flash using miflash.
http://bigota.d.miui.com/V9.5.3.0.M...FA_20180405.0000.00_6.0_global_7b6353b764.tgz
naik2902 said:
What is ARB ?
Download and Flash this fastboot stable rom for kenzo .
For unlocked bootloader u can flash using mi flash and fastboot mode.
For locked bootloader u need to put phone in EDL mode and flash using miflash.
http://bigota.d.miui.com/V9.5.3.0.M...FA_20180405.0000.00_6.0_global_7b6353b764.tgz
Click to expand...
Click to collapse
ARB is Anti Rollback Protection bro
this will disable u to dongrade to lower ROM version bro
okay bro?
ARB is not implemented for RN3. So don't worry, just flash latest fastboot ROM from official website (http://en.miui.com/a-234.html) using Mi Flash (clean and lock) and you will be good to go.
I have done it a few times, haven't faced any problem even for a single time
camlin said:
Hi,
I have 2 RN3P, both running a custom rom.
One has an unlocked bootloader and another has a locked bootloader.
I'm looking to sell these phones.
I would like to know how can I return to a COMPLETELY stock rom, meaning NO TWRP, locked BL, etc.
I'd prefer not triggering ARB.
Could anyone please tell me which firmware to flash and which method to us ? TWRP or MiFlash ?
I'm ok with using an older firmware too, I just need to return the phone to factory condition.
Thanks for any help.
Click to expand...
Click to collapse
you can try this method :https://en.miui.com/a-234.html
Download global Stable rom( I flashed DEV last month and it worked for me) if you are form India. If miui flash tool doesnt detect your phone in EDL mode, use miflashtool 20160830 / https://androidmtk.com/download-xiaomi-mi-flash-tool
Please use caution and do it at your own risk . I reverted my phone to DEV fastboot ROM & locked bootloader to getaway from ZCX TWRP issues.
My issue is resolved.
I used the oldest rom I could find (marshmallow).
I used MiFlash, fasboot for unlocked bootloader and EDL mode for locked bootloader.
Thanks for the help everyone!

Relock bootloader with twrp

Hi guys, I currently have a poco with PE and I want to relock my bootloader. I wanted to know if it is required to be in stock ROM for doing so.
thanks in advance
AFAIK yes, you must install stock kernel
You need stock ROM and stock recovery to relock bootloader and not brick your phone.
shivanand.shetti1 said:
Hi guys, I currently have a poco with PE and I want to relock my bootloader. I wanted to know if it is required to be in stock ROM for doing so.
thanks in advance
Click to expand...
Click to collapse
It is not advisable to lock the bootloader while on a custom ROM.

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