Mi4c Android 5.1.1 To 7.0


iamme729

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Nov 22, 2015
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How long should I wait when I have the black screen with white Mi.com letters? I have updated to 6.12.12 via TWRP performed dalvik + cache clean and after I selected the latest zip from Updater app. TWRP screen appeared and after it reboots the screen freezes on the black splash. I waited ~15-20 mins with no progress, and usually there is something like 'installing updates' etc. Afterwards I was still able to access TWRP so Android 7 was not installed (thankfully) and I could reinstall 6.12.12. Any help?
6.12.22 is the version you need to be on...copy it to your device and reboot to TWRP select install... select the .ZIP ...swipe to install...afterward do the same for Android N...then unlock again and install TWRP Libra 7...
 

Nadarian

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Aug 21, 2017
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6.12.22 is the version you need to be on...copy it to your device and reboot to TWRP select install... select the .ZIP ...swipe to install...afterward do the same for Android N...then unlock again and install TWRP Libra 7...
I made mistake when writing the message. Ofc I was on 6.12.22 not 6.12.12. But you say that I can install Nougat with TWRP as well? does the TWRP version matter? I have 3.0.2-0 installed
 

iamme729

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Nov 22, 2015
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That version will be fine...if you use the Updater App it boots to TWRP anyway ..but use the Updater App ..reboot to recovery and install via TWRP...

Sent from my Mi-4c using Tapatalk
 

Nadarian

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Aug 21, 2017
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Unfotunately it does not work. When I install it from TWRP it's the same what @marciez mentioned, "unknown command. Unmount of system failed. No such volume" error. After that I cleaned the dalvik and cache and rebooted. I left the phone for whole night and still there was black screen with white Mi.com letters. Has anyone made update from MIUI 8 5.1.1 to MIUI 9 7.0 ? Maybe I should install MIUI8 with android 7 before and then update to MIUI 9?
 

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iamme729

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Nov 22, 2015
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Unfotunately it does not work. When I install it from TWRP it's the same what @marciez mentioned, "unknown command. Unmount of system failed. No such volume" error. After that I cleaned the dalvik and cache and rebooted. I left the phone for whole night and still there was black screen with white Mi.com letters. Has anyone made update from MIUI 8 5.1.1 to MIUI 9 7.0 ? Maybe I should install MIUI8 with android 7 before and then update to MIUI 9?
If you are going from 5.1.1 to Miui 9 you need to use TWRP 3.1.1.1....
https://dl.twrp.me/libra/
 

SLiM

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Aug 19, 2016
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There is a problem with direct installation on MI4C from version 6.12.22 to 7.8.17. You need to do a firmware update to 7.2.9 and then the system gets loaded. The same thing happens when you go from 6.12.22 to 7.7.20 and earlier, it looks like it must be installed first 7.2.9.

If anyone has a problem here is N firmware 7.2.9 to install in twrp libra-aqua_firmware_7.2.9.zip
This is a universal twrp for MI4C, works on both lollipop and nougat bootloader TWRP 3.1.1 for libra/aqua

EDIT:
@iamme729
I see where the problem is. There is no new bootloader in xiaomi.eu package. After updating miui is still the old 5.1 bootloader, the system does not load. In this package 7.2.9 is a new bootloader ;)
 
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iamme729

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Nov 22, 2015
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There is a problem with direct installation on MI4C from version 6.12.22 to 7.8.17. You need to do a firmware update to 7.2.9 and then the system gets loaded. The same thing happens when you go from 6.12.22 to 7.7.20 and earlier, it looks like it must be installed first 7.2.9.

If anyone has a problem here is N firmware 7.2.9 to install in twrp libra-aqua_firmware_7.2.9.zip
This is a universal twrp for MI4C, works on both lollipop and nougat bootloader TWRP 3.1.1 for libra/aqua
Yes I see that now and that he is trying to go from 5.1.1 to Miui 9...without first going to Android N....the title of the thread is slightly confusing ...thanks for your observations and recommendations.....
 

Nadarian

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Aug 21, 2017
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the title of the thread is slightly confusing
Maybe, but the update process documentation is complete rubbish. I have not seen any sticky post that I need to go to android N first, not mentioned in the release notes of MIUI 9.

@slimozis many thanks to you man, I have sucessfully updated TWRP and MIUI. Dzięki!
 

iamme729

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Nov 22, 2015
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Maybe, but the update process documentation is complete rubbish. I have not seen any sticky post that I need to go to android N first, not mentioned in the release notes of MIUI 9.

@slimozis many thanks to you man, I have sucessfully updated TWRP and MIUI. Dzięki!
I agree with you 100 % Nor have I seen anything of the sort...
 

SLiM

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Aug 19, 2016
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6.12.22 is the latest version of 5.1 and 7.2.9 is the first of 7.0, as you made the first update to this version 7.2.9, it should not be further problems. But as you skip 7.2.9 and you want to install eg 7.7.20 this is a problem, the bootloader does not boot the system. Just install the N firmware itself and the system will boot. I checked with curiosity because a few people on miuipolska.pl had a problem with it. I think this is the fastest way to go from 5.1 to 7.0.
 
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iamme729

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Nov 22, 2015
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6.12.22 is the latest version of 5.1 and 7.2.9 is the first of 7.0, as you made the first update to this version 7.2.9, it should not be further problems. But as you skip 7.2.9 and you want to install eg 7.7.20 this is a problem, the bootloader does not boot the system. Just install the N firmware itself and the system will boot. I checked with curiosity because a few people on miuipolska.pl had a problem with it. I think this is the fastest way to go from 5.1 to 7.0.
I have a spare Mi4c on 5.1.1 that I don't use I will play with it and see what happens...do you lose your data doing it this way ? Not that it matters there is nothing on my device....Thanks again...
 

SLiM

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Aug 19, 2016
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I made the transition from RR to MIUI, I had to do a basic wipe. Then installed 6.12.22 and then MIUI9 7.8.17, the system did not start. After installing N firmware the system has started. The same I checked by installing the latest version of MIUI8 7.7.20 on 6.12.22, the system only started after installing N firmware libra-aqua_firmware_7.2.9.zip
 
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iamme729

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Nov 22, 2015
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I made the transition from RR to MIUI, I had to do a basic wipe. Then installed 6.12.22 and then MIUI9 7.8.17, the system did not start. After installing N firmware the system has started. The same I checked by installing the latest version of MIUI8 7.7.20 on 6.12.22, the system only started after installing N firmware libra-aqua_firmware_7.2.9.zip
Gracias...Thank you....
 

SLiM

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Aug 19, 2016
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Shoma

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Aug 27, 2017
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@slimozis thank you so much. I have struggle for days trying to update last MIUI 9 over 6.12.22 version. I update TWRP with fastboot then install latest MIUI 9 and install 7.2.9 firmware. After reboot everything works fine. I dont wipe anything so now i have all my apps and data on latest MIUI.
 

siba01

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Oct 20, 2015
6
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I made the transition from RR to MIUI, I had to do a basic wipe. Then installed 6.12.22 and then MIUI9 7.8.17, the system did not start. After installing N firmware the system has started. The same I checked by installing the latest version of MIUI8 7.7.20 on 6.12.22, the system only started after installing N firmware libra-aqua_firmware_7.2.9.zip
Hi,
And what about bootloader? After update to MIUI9 and flash nougat firmware is BL locked?
 

k0kch00n

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May 15, 2017
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This is what i did to my MI4C with CM13. Now my MI4C with V8.5.1.0 ROM. Hope it help. :)

1. Flash and boot TWRP for 5.1.1
2. In TWRP, flash 6.12.22 ROM and clear/wipe dalvik/cache and reboot
3. Keep having problem to boot up (Some warning msg). So, i keep doing step #1 and #2 until i get the 6.12.22 ROM boot up successfully.
4. Go to TWRP and flash V8.5.1.0 ROM and clear/wipe dalvik/cache and reboot.
5. Flash and boot TWRP 3.1.1 for 7.0 and successful.
 

Charly Groucho

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Apr 21, 2016
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There is a problem with direct installation on MI4C from version 6.12.22 to 7.8.17. You need to do a firmware update to 7.2.9 and then the system gets loaded. The same thing happens when you go from 6.12.22 to 7.7.20 and earlier, it looks like it must be installed first 7.2.9.

If anyone has a problem here is N firmware 7.2.9 to install in twrp libra-aqua_firmware_7.2.9.zip
This is a universal twrp for MI4C, works on both lollipop and nougat bootloader TWRP 3.1.1 for libra/aqua

In this package 7.2.9 is a new bootloader

Hey Bro! You rock it out! I followed to the letter your instructions on how to update my Mi4c from ROM 8 (6.12.22) to ROM 9 (7.9.14) and it all came off perfectly, without a hitch. Thanks a lot for your clear and detailed advice, slimozis!
It seems I got a locked bootloader after updating, or is it just my imagination? I always thought that xiaomi.eu roms never locked bootloader.
Is that because of the firmware update? or is it because of the rom update?

Anyway, this is the first time my bootloader gets locked after updating to eu rom.

PD: Well, I've just seen why here:

https://xiaomi.eu/community/threads/7-2-23-24.38808/#post-354999
 
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iamme729

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Nov 22, 2015
1,426
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Hey Bro! You rock it out! I followed to the letter your instructions on how to update my Mi4c from ROM 8 (6.12.22) to ROM 9 (7.9.14) and it all came off perfectly, without a hitch. Thanks a lot for your clear and detailed advice, slimozis!
It seems I got a locked bootloader after updating, or is it just my imagination? I always thought that xiaomi.eu roms never locked bootloader.
Is that because of the firmware update? or is it because of the rom update?

Anyway, this is the first time my bootloader gets locked after updating to eu rom.

PD: Well, I've just seen why here:

https://xiaomi.eu/community/threads/7-2-23-24.38808/#post-354999
This update will re-lock your bootloader...you only need to unlock it one time after upgrading....How does this ROM perform...any majors bugs ...I have a spare Mi4c I may upgrade it.....
 
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SLiM

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Aug 19, 2016
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@Charly Groucho
For MI4C xiaomi.eu has previously used the unlocked bootloader but after switching to 7.0 it will not work, the old one does not load the system for that it must use the new one which is already locked. However, if you did as I wrote, you do not need to unlock the bootloader, twrp should stay and you can install updates in it !!!
 

Charly Groucho

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Apr 21, 2016
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How does this ROM perform...any majors bugs ...I have a spare Mi4c I may upgrade it.....
Well, it's too soon to talk about any bugs, but so far I haven't seen any, big enough to mention.
These are the only minor things I’ve noticed so far:
1. Screen brightness is at its lowest level when phone starts, even though you configure it otherwise
2. “MTP” option doesn’t appear in phone when connected to PC. Therefore, PC does not recognize it. The only files PC can see from the phone are “DCIM” & “Pictures” if you select the option `(PTP). I mean, if you select `transfer files´ from the phone, the PC does not recognize the phone. However, PC fully recognizes the phone (with all the internal storage) when connected via TWRP

But the rom runs nicely and very smoothly. So far, I quite like it.
 
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