Ok I managed to execute the command "adb disable-verity" which prompts:
"already disabled". But I still have the following error:
# mount -o remount rw /system
>> mount: '/system' not in /proc/mounts
So I cannot manually push an APK to the /system/priv-app folder. How can I
solve this issue?
On Thursday, July 30, 2020 at 9:11:06 PM UTC+2 pete....@nxp.com wrote:
>
>
> 在 2020年7月30日星期四 UTC+8下午7:27:15，Riccardo Bruè写道：
>
>> I am facing the following problem on a custom iMX8 board (compiled
>> following the vendor's guide) and using Android 10 (I have root access):
>>
>> When I connect via ADB (over WiFi) I issue the following command:
>> # mount -o remount rw /system
>> >> mount: '/system' not in /proc/mounts
>>
>> So, I tried to solve such error by issuing this other command:
>> $ mount -o remount rw /
>> >> Another IO error occurs
>>
>> At the end I tried this other command:
>> $ adb remount
>> >> Error
>> $ adb disable-verity
>> >> Device is locked. please unlock the device first
>>
>> So when I try to unlock it following these steps:
>>
>> - Settings => System => Advanced => Developer options => OEM unlocking
>> - reboot to bootloader (device stuck)
>> - type "fastboot 0" in the U-Boot command line
>> - run "sudo `which fastboot` oem unlock" from the Host PC (device not
>> seen from the PC)
>> - wait until the unlock process is complete
>>
>> I receive the annoted errors, the device remains stuck (I already opened
>> a ticket with the board vendor and I am waiting for a reply).
>>
>> Furthermore, I don't have any display to use with such board so I don't
>> know what is appening (I can communicate via debug serial but it seems that
>> it remains stuck also from there).
>>
>> So in order to avoid the whole process, I was thinking to directly build
>> a custom version of the Android OS which is directly OEM unlocked so that I
>> can issue the adb remount without any issue, but I am a beginner and I
>> don't know where to start.
>>
>
> Hi what's the log "the annoted errors, the device remains stuck " after
> you unlock the device?
> do you "sudo fastboot reboot" after unlock?
>
> If you want to unlock your device directly, you can apply below patch in
> uboot.
>
> -- a/drivers/fastboot/fb_fsl/fastboot_lock_unlock.c
> +++ b/drivers/fastboot/fb_fsl/fastboot_lock_unlock.c
> @@ -360,6 +360,7 @@ FbLockState fastboot_get_lock_stat(void) {
> unsigned char *bdata;
> int mmc_id;
> FbLockState ret;
> + return FASTBOOT_UNLOCK;
> /* uboot used by uuu will boot from USB, always return UNLOCK
> state */
> if (is_boot_from_usb())
> return g_lockstat;
> @@ -404,6 +405,7 @@ fail:
> * which is managed by PresistDataService
> */
>
> +#define CONFIG_ENABLE_LOCKSTATUS_SUPPORT
> #ifdef CONFIG_ENABLE_LOCKSTATUS_SUPPORT
> //Brillo has no presist data partition
>
>
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