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root and unroot xiaomi Mi 4i

1) is rooting of xiaomi mi 4i void the warranty?
2) is there any method to unroot it again?

1. No
2. SuperSu -> Full Unroot & Reboot

parth_android said:
1) is rooting of xiaomi mi 4i void the warranty?
2) is there any method to unroot it again?
Click to expand...
Click to collapse
1. For Xiaomi devices with MIUI installed , there's no problem in rooting . Warranty isn't voided , but you wont get OTA
2. Maybe yes . I don't have idea about that

2. Flash a fastboot image.

Mate 9 Unlock/Relock/Lock question

Hello, i have a big doubt about unlock my Mate 9.
I have read some guides but i'am confused, i will not lose the warranty and i see that with software dc-unlocker is possible relock the bootloader at original status, it is right? there are other softwares that do same job?
Sorry for my bad english.
thanks for help

Khris00 said:
Hello, i have a big doubt about unlock my Mate 9.
I have read some guides but i'am confused, i will not lose the warranty and i see that with software dc-unlocker is possible relock the bootloader at original status, it is right? there are other softwares that do same job?
Sorry for my bad english.
thanks for help
Click to expand...
Click to collapse
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
thanks for answer
So is possible change the status just flashing the stock firmware? is so simple?
i need to do then unlock bootloader>>install modded recovery>>flash modded rom. For return to the stock firmware and bootloader locked what i need to do? i flash the stock firmaware but the twrp remain?
thanks

Khris00 said:
thanks for answer
So is possible change the status just flashing the stock firmware? is so simple?
i need to do then unlock bootloader>>install modded recovery>>flash modded rom. For return to the stock firmware and bootloader locked what i need to do? i flash the stock firmaware but the twrp remain?
thanks
Click to expand...
Click to collapse
No. When you flash stock firmware everything is back to stock. If there was a way to flash a modified update.zip with Twrp as recovery instead of stock recovery it would be possible. But as far as I know we can't yet. I've tried to repack using Huawei Update extractor but it doesn't want to, header mismatch. (this is on all extracted files, not just twrp)
The only reason to get locked bootloader would be if you needed to return the phone because of a software error. If it's hardware it should be replaced anyway.

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
ante0 said:
No. When you flash stock firmware everything is back to stock. If there was a way to flash a modified update.zip with Twrp as recovery instead of stock recovery it would be possible. But as far as I know we can't yet. I've tried to repack using Huawei Update extractor but it doesn't want to, header mismatch. (this is on all extracted files, not just twrp)
The only reason to get locked bootloader would be if you needed to return the phone because of a software error. If it's hardware it should be replaced anyway.
Click to expand...
Click to collapse
thanks for help Ante and sorry for my newbie questions, i will just flash one mod rom instead a stock i have now(B182) because i don't like emui, but if is possible when i'll go to sell i can back to stock condition and warranty Ok, i can do that?
thanks

Khris00 said:
thanks for help Ante and sorry for my newbie questions, i will just flash one mod rom instead a stock i have now(B182) because i don't like emui, but if is possible when i'll go to sell i can back to stock condition and warranty Ok, i can do that?
thanks
Click to expand...
Click to collapse
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...

ante0 said:
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...
Click to expand...
Click to collapse
you mean all modded roms are emui based?

Khris00 said:
you mean all modded roms are emui based?
Click to expand...
Click to collapse
Yes.
And there are only 2. RomAur and Ephemeral

ante0 said:
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...
Click to expand...
Click to collapse
ante0 said:
Yes.
And there are only 2. RomAur and Ephemeral
Click to expand...
Click to collapse
thanks again

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
sorry for my bad thing. But can i ask you help me this case:
i have Mate 9 Pro LON-L29C636C361 (lastest Oreo ) , but my bootloader is unlocked, and maybe not have stock recovery .
So, which method can flash again full rom C361 (3 file : update.zip, data full, hw...etc) and complete back to stock with locked bootloader???
I read somewhere about method LON-HWOTA, but it fail when flash TWRP step, because i am on Oero, so this method can not use in this my case . Can you show me another way ?

to relock bootloader on Android 8 (MUI8), only works if you have your CORRECT oeminfo.bin. make sure you backup yours before rebranding
1. just flash TWRP
2. make folder folder HWOTA8 on SD card
3. Download HWOTA8 and copy "hwota8_rebrand" to SDcard
4. Copy your oeminfo.bin file to HWOTA8 folder.. Make sure to rename your file to oeminfo.bin
5. Boot into TWRP and install from SDcard hwota8_rebrand
Done bootloader relocked

How to downgrade my Honor8 without voiding its warranty ?

I have seen so many videos on YouTube and so many threads on XDA regarding how to downgrade Honor8 from EMUI 5.0 to EMUI 4.1, does flashing those two Update.app files void its warranty ?
How can I get the stock Recovery after I have flashed TWRP ?
Please help

Your warranty is void since you have flashed TWRP...

anshuraj132 said:
I have seen so many videos on YouTube and so many threads on XDA regarding how to downgrade Honor8 from EMUI 5.0 to EMUI 4.1, does flashing those two Update.app files void its warranty ?
How can I get the stock Recovery after I have flashed TWRP ?
Please help
Click to expand...
Click to collapse
Search for your rollback package.

I haven't flashed TWRP yet.
netvorCZEK said:
Your warranty is void since you have flashed TWRP...
Click to expand...
Click to collapse
Just asking, where can I get stock recovery.img since honor don't provide recovery image alongwith its ROM package.

Already downloaded
itisiryan said:
Search for your rollback package.
Click to expand...
Click to collapse
I already downloaded the package but one cannot simply rollback to previous version without flashing two
Update.app files.
I tried and failed. Wondering what does the 30mb update.app file does, does it unlock the bootloader or anything that voids warranty ?

anshuraj132 said:
I already downloaded the package but one cannot simply rollback to previous version without flashing two
Update.app files.
I tried and failed. Wondering what does the 30mb update.app file does, does it unlock the bootloader or anything that voids warranty ?
Click to expand...
Click to collapse
The roolback relock your bootloader. But the roolback it's about 70/80 Mb

grilla99 said:
The roolback relock your bootloader. But the roolback it's about 70/80 Mb
Click to expand...
Click to collapse
Does this rollback void phone's warranty ?
Please help because I don't want to loose my 2 years warranty.

anshuraj132 said:
Does this rollback void phone's warranty ?
Please help because I don't want to loose my 2 years warranty.
Click to expand...
Click to collapse
In my case no, i broke my retro glass and i took the phone to the assistance, but before i relocked it with the roolback, and they did not sad nothing. And i got my phone fixed. If you enter in fastboot mode you can see frp/phone ulocked, and after flashing the roolback if you reenter in fastboot you will se frp locked in green

Thanks
grilla99 said:
In my case no, i broke my retro glass and i took the phone to the assistance, but before i relocked it with the roolback, and they did not sad nothing. And i got my phone fixed. If you enter in fastboot mode you can see frp/phone ulocked, and after flashing the roolback if you reenter in fastboot you will se frp locked in green
Click to expand...
Click to collapse
Thanks for your reply . ?

anshuraj132 said:
I already downloaded the package but one cannot simply rollback to previous version without flashing two
Update.app files.
I tried and failed. Wondering what does the 30mb update.app file does, does it unlock the bootloader or anything that voids warranty ?
Click to expand...
Click to collapse
Still failing?

itisiryan said:
Still failing?
Click to expand...
Click to collapse
Nops, Successfully downgraded to marshmallow.
Thanks

Warranty for rooted, custom rom

Do Huawei honor warranty for the watch even if its flashed with custom rom/kernel?
Believe I have hardware failure on Bluetooth and need get it replaced.

DuoPad said:
Do Huawei honor warranty for the watch even if its flashed with custom rom/kernel?
Believe I have hardware failure on Bluetooth and need get it replaced.
Click to expand...
Click to collapse
If it's the Bluetooth version then flash the Google factory image and relock the bootloader to be safe ?

thereal_bigjake said:
If it's the Bluetooth version then flash the Google factory image and relock the bootloader to be safe
Click to expand...
Click to collapse
Its the LTEversion. Ill continue with questions in the rom/kernel thread.

China version Mix 3, going back to China ROM, Could I relock the bootloader?

I bought a 8GB/256GB Mix 3 in Shanghai couple of months ago. It is China version. I unlocked the bootloader, flashed Global stable ROM using MiFlash, then installed TWRP and flashed the latest weekly EU ROM. Now I want to sell the phone hopefully in its factory status. Could I use MiFlash to flash Chinese stable ROM back and relock the bootloader? Will this brick the phone? Thanks!

Don't relock the bootloader, China version will brick

siggey said:
Don't relock the bootloader, China version will brick
Click to expand...
Click to collapse
My question is, will China version brick if I flash China ROM BACK and relock bootloader to its factory status?