Hello everyone.
A few days ago I started an update (of a few Mb, I don't remember the exact version) of the firmware of my boox note air 2 plus (which I had already successfully updated to firmware v4 a few months ago). After a few minutes and several reboots, the tablet remained stuck on the black reboot screen.
Several minutes later I rebooted the tablet but the situation had not changed: it no longer started normally.
I then did a series of tests (which did not work):
- I downloaded the upx file, converted it into a zip file and tried to update by restarting the tablet in recovery mode (pressing the power button for a few seconds and then after 7 more seconds, clicking 5 times) and selecting update via ADB:
Code:
adb sideload update.zip
the command execution stopped at 47% returning the error
Code:
"Error applying update: 7 (ErrorCode: : kInstallDeviceOpenError)"
"E:Error in /sedeload/package.zip (status1)
- I extracted the archive with the various .img files from the payload.bin file contained in the zip file and tried to start/flash the abl, boot, dtbo, recovery, vbmeta, vbmeta_system and xbl images via fastboot but the situation did not change. The tablet is reintroduced as fastboot mode but it doesn't allow me to flash images;
- I tried to change the active slot (initially I could only do it from fastbootd and not from normal fastboot);
- subsequently (after changing slots a few times - in fastbootd) the tablet got stuck in a strange mode: white screen, boox written and blue LED on (or purple if the USB cable is connected). I can no longer access recovery via key combination and I can no longer change slots via fastboot;
- I tried to flash the images via edl (Renate's version): the files seem to be written and it doesn't give me errors but the situation doesn't change.
The "fastboot getvar all" command returns:
Code:
(bootloader) has-slot:modem:yes
(bootloader) has-slot:system:no
(bootloader) current-slot:b
(bootloader) has-slot:boot:yes
(bootloader) slot-retry-count:b:0
(bootloader) slot-unbootable:b:yes
(bootloader) slot-successful:b:no
(bootloader) slot-retry-count:a:2
(bootloader) slot-unbootable:a:no
(bootloader) slot-successful:a:no
(bootloader) slot-count:2
(bootloader) secure:no
(bootloader) serialno:369B908B
(bootloader) product:bengal
(bootloader) snapshot-update-status:none
(bootloader) is-userspace:no
(bootloader) max-download-size:804268032
(bootloader) kernel:uefi
In summary, so far the tablet:
- is stuck on boot on a white screen and boox written;
- doesn't go into adb mode;
- it only starts in fastboot (with limited commands);
- I can send it into edl mode.
Could someone help me please? I don't want to do a factory reset because I don't want to lose my personal data.