Mi4c Android 5.1.1 To 7.0


Nov 22, 2015
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I have Miui 8 stable. I would like to move tu Miui 9 stable. I have bootloader locked my the way.

Please can you exactly explain all steps I need to?
Look at my post above #170...
Follow these instructions .....
1. transfer 6.12.22 to phone
2. boot to TWRP MAKE FULL BACKUP! STORE THIS TO COMPUTER OR OTHER SECURE PLACE! and install 6.12.22, wipe dalvic&cache
3. boot to 6.12.22
4. transfer 7.2.9 firmware to phone
5. boot to TWRP and install 7.2.9, wipe dalvic&cache
6. boot to 7.2.9
7. transfer 7.9.21 to phone
8. boot to fastboot, use "fastboot flash recovery twrp.img" "fastboot boot twrp.img" in commmandline of your comp to install new TWRP 3.1.1
9. boot to TWRP and install 7.9.21, wipe dalvic&cache
10. boot to your brand new miui 9, wait for it to start may take like 15 mins or so.

Yes you can skip some parts if you like, but this is the "fool proof" method.
Remember you can always check if your phone is unlocked from fastboot by typing "fastboot oem device-info", and unlock if nesessary.
Needed files:
https://www.androidfilehost.com/?w=files&flid=137906 (6.12.22)
https://www.androidfilehost.com/?fid=457095661767138866 (7.2.9 firmware)
https://androidfilehost.com/?fid=457095661767135741 (TWRP Libra 7)
https://devs-lab.com/download-minimal-adb-fastboot-tool.html (ADB & Fastboot minimal setup)
And latest beta from https://xiaomi.eu/community/fo.../miui-weekly-rom-releases.103/ (miui 9 betas)
EDIT: Changed download location to TWRP Libra 7 ....
Sent from my Mi-4c using Tapatalk
 
Last edited:
Nov 18, 2017
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It certainly can't hurt anything ...may improve performance....

Sent from my Mi-4c using Tapatalk
this: first time I flashed my mobile, was from developer.it to stable.eu. But I didn't delete anything but just wipe dalvick e cache. I think that the best flashing is reset all (data and apps) and put the new ROM.

So, within the process you posted, in which step exactly could I do factory reset?
 
Dec 29, 2017
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I tried to follow the instructions given in post 170 but after step 5 the phone wont boot. Stuck at the MI logo for over 30 minutes. The bootloader is also blocked now when checking in fastboot.
 
Nov 16, 2016
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You need to go back to official firmware using xiaomi miflash tool.
Update to 6.12.22.
Update to 7.2.9.
Apply for bootloader unlock(the official way).
Then try new roms.
Once you officially unlock the bootloader it should not be re-locked

LE: I also had some issues with updates, but the bootloader unlock was the key in the end. you can follow my replies in this thread.
 
Likes: iamme729
Dec 29, 2017
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You need to go back to official firmware using xiaomi miflash tool.
Update to 6.12.22.
Update to 7.2.9.
Apply for bootloader unlock(the official way).
Then try new roms.
Once you officially unlock the bootloader it should not be re-locked

LE: I also had some issues with updates, but the bootloader unlock was the key in the end. you can follow my replies in this thread.
Thanks, so the important step I was missing seems to be the official way of unlocking the bootloader. I also tried flashing from 7.2.9 to miui 9 (7.9.2) but that didn't work so it was probably the bootloader.
 
Nov 16, 2016
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I managed to flash one or 2 firmwares on top of 7.2.9(check last 2-3 pages) but in the end you need to apply for bootloader unlock. I received permission within a day.

Good luck.

Sent from my Mi-4c using Tapatalk
 
Likes: iamme729
Nov 22, 2015
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I tried to follow the instructions given in post 170 but after step 5 the phone wont boot. Stuck at the MI logo for over 30 minutes. The bootloader is also blocked now when checking in fastboot.
There are some issues it seems with the version of TWRP being used and unlocking after flashing ..... try this method ... it has worked for several people ...

Okay, I finally managed to install the rom. Here, all my steps:
- download twrp-3.1.1-0-libra.img (doesn't work with 3.1.1.1)
- put the ROM at the root of my phone
1. adb reboot bootloader
2. fastboot devices // check if device is listed
3. fastboot oem device-info // check bootloader info lock/unlock
4. fastboot flash recovery twrp-3.1.1-0-libra.img
5. fastboot boot twrp-3.1.1-0-libra.img
6. wipe
7. install the rom and reboot
8. error: boot loop
9. use miflash_unlock-en-2.3.803.10 and re-unlock the phone
10. reboot and wait a bit. Here we go, I am on MIUI 9
https://xiaomi.eu/community/threads/official-miui-9-stable-rom-version-v9-1-2-0-nxkcnei.42306/page-3 .. post # 52
 
Likes: xtcr1st1
Dec 29, 2017
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I managed to install the latest miui. The problem was that after going to 7.2.9 the bootloader gets locked. I unlocked the bootloader using the official tool after getting permission and then there were no problems in installing other roms. I also used the twrp 3.1.1.0 as it works on both android 5 and 7. Thanks for the help guys!
 
Likes: iamme729
Apr 21, 2016
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I managed to install the latest miui. The problem was that after going to 7.2.9 the bootloader gets locked. I unlocked the bootloader using the official tool after getting permission and then there were no problems in installing other roms. I also used the twrp 3.1.1.0 as it works on both android 5 and 7. Thanks for the help guys!
Same happened to me when I updated from Android 5 to Android 7 for the first time. Like you, I got my bootloader locked and had to unlock the official way. (Also had some trouble with the firmware as described here:

https://xiaomi.eu/community/threads/mi4c-android-5-1-1-to-7-0.40827/page-3#post-381538

Even though I finally managed to install that first version of MIUI 9, I went back to Android 5, cause I didn't quite like that first MIUI 9 I tried, (7.9.14).
When I updated to this version MIUI 9.1 (7.12.21) this time my bootloader didn't get locked. Also did it with TWRP 3.1.1-0 (the only one didn't give me any trouble). And back to OTA updates again! (Jesus! I don't remember the last time used to get OTA updates)
 
Likes: iamme729
Nov 22, 2015
1,348
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I managed to install the latest miui. The problem was that after going to 7.2.9 the bootloader gets locked. I unlocked the bootloader using the official tool after getting permission and then there were no problems in installing other roms. I also used the twrp 3.1.1.0 as it works on both android 5 and 7. Thanks for the help guys!
Fantastic.....

Sent from my Mi-4c using Tapatalk
 
Jan 12, 2018
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Hi all! I need help before i brick my device.
I want to flash MIUI 9.
i have xiaomi mi4c:
android 5.1.1 LMY47V
miui - smiui 8 by sebsch1991- based on 6.7.14
TWRP 3.1.1.0
unlocked bootloader
rooted device

Im not very intouch with flashing
I can't update TWRP to 3.1.1.1 / phone boot loop reboots to ****** logo .After sevral reboots it can boot Miui and TWRP disappears/
I can put back TWRP 3.1.1.0 by "official TWRP app"
What should i do to flash MiUi 9?
Thanks

p.s. I did understand 3.1.1.1 is for android 7
 
Last edited:
Nov 16, 2016
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Last edited:
Likes: iamme729
Nov 16, 2016
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Again - this info is present in previous posts:
- you need to be on latest Lollipop and have bootloader officially ulocked.
There is no safe way to do it. Read the post I mentioned.
Even if you bootloop, you can always start again.
 
Likes: iamme729
Jan 12, 2018
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ok...
PS C:\adb> fastboot oem device-info
...
(bootloader) Device tampered: false
(bootloader) Device unlocked: false
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
OKAY [ 0.049s]
i have TWRP 3.1.1.0 installed

does that mean that my bootloader is locked and i cant flash 6.12.22
do i need to unlock first?
/ im pretty sure i have rooted phone. why "deice tampered" is faulse?