Hovatek Forum DEVELOPMENT Android Installation of GSI rom on my ouckitel c21 android 10 device
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Installation of GSI rom on my ouckitel c21 android 10 device

Installation of GSI rom on my ouckitel c21 android 10 device

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Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
14-03-2021, 07:44 PM
#1



Hello sir, i purchased a oukitel C21 device having Android 10 out of box. The stock rom is stock android based. Am an advance user, i unlocked the bootloader, disabled verified boot. I have read up on the usage of fastbootd mode on android 10 devices, i was able it to setup up correctly..
But now is the issue, in fastbootd mode, i used the command 'fastboot flash system havoc.img'.. The installation begin . and sparse image is been loaded into the phone.. But at the middle of the operation. It returned a error message ' Failed (remote: Operation not permitted) '.. I have tried with different Gsis but all is the same.
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Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
14-03-2021, 10:23 PM
#2
Hello sir. Another issue just popper up now.. I haven't seen it before.. Tee key not write Google key not write.. It happened that my device enter red state. So i used format all download.. Not I have this red text on my top right screen corner
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
14-03-2021, 10:24 PM
#3
Note, i habe googled it, tried all the fix i saw . the adb methods root etc.. No works for my phone
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
14-03-2021, 10:43 PM
#4
And sir, if i were to see another oukitel c21 , is there a particular patition i can back up and then flash it in my phone ...
X3non
X3non
X3non
Recognized Contributor
22,062
15-03-2021, 09:16 AM
#5



(14-03-2021, 07:44 PM)Adewoyin Peter Tayo Hello sir, i purchased a oukitel C21 device having Android 10 out of box. The stock rom is stock android based. Am an advance user, i unlocked the bootloader, disabled verified boot. I have read up on the usage of fastbootd mode on android 10 devices, i was able it to setup up correctly..
But now is the issue, in fastbootd mode, i used the command 'fastboot flash system havoc.img'.. The installation begin . and sparse image is been loaded into the phone.. But at the middle of the operation. It returned a error message ' Failed (remote: Operation not permitted) '.. I have tried with different Gsis but all is the same.

i hope you were using the latest fastboot, you can get this from latest platform tool, check @ https://www.hovatek.com/forum/thread-17104.html


(14-03-2021, 10:23 PM)Adewoyin Peter Tayo Hello sir. Another issue just popper up now.. I haven't seen it before.. Tee key not write Google key not write.. It happened that my device enter red state. So i used format all download.. Not I have this red text on my top right screen corner

if the method @ https://www.hovatek.com/forum/thread-287...#pid188826 doesn't work for you then contact your OEM, they should send you the sn writer tool / files needed to write back the original tee key
X3non
X3non
X3non
Recognized Contributor
22,062
15-03-2021, 09:17 AM
#6
(14-03-2021, 10:43 PM)Adewoyin Peter Tayo And sir, if i were to see another oukitel c21 , is there a particular patition i can back up and then flash it in my phone ...

backup from another device won't do you any good now, unless you made a full backup of your own device before now
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
15-03-2021, 10:48 AM
#7
So contacting the OEM is the only thing i can do..
Pls Sir do you have any idea on how to go about it..
Are they just going to give me those files i need..
X3non
X3non
X3non
Recognized Contributor
22,062
16-03-2021, 08:37 AM
#8
(15-03-2021, 10:48 AM)Adewoyin Peter Tayo So contacting the OEM is the only thing i can do..
Pls Sir do you have any idea on how to go about it..
Are they just going to give me those files i need..

visit the official website and use the "contact us" link at the bottom
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
17-03-2021, 06:32 PM
#9
Sir, i contacted my oem. They sent me the files i needed to fix it.. I have fix it. The reg error is gone and i have restored my original serial number.
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Adewoyin Peter Tayo
Junior Member
15
17-03-2021, 06:57 PM
#10



I will be more cautious in my future attempts...
Noe back to the initial issue. I still want to install gsi.. But for some unknown reasons my device is not allowing the installation to complete...
So now i have a different approach.. Is there a way to unpack the super.img and replace the system.img within it with a custom gsi, repack it flash it via sp tools..
Kindly let me know your opinion on it Sir
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