My db820c board already has Debian system with 4.11 linux kernel. But I need a system with 4.14 kernel, so I try to re-install the OS.
I followed this guide. When I try to boot into fastboot, I found the board still boots the already available boot image, so I tried the following method:
Note: If the board is not going into fastboot mode and it boots the already available boot image, you can delete the boot partition after login using the command cat /dev/zero > /dev/disk/by-partlabel/boot. Then next time it will boot into fastboot mode directly.
I typed login the board and typed
cat /dev/zero > /dev/disk/by-partlabel/boot, it tell me no memory can be used. Then I restart the board, power on the device while holding Vol (-) button, but I get no reaction on my monitor this time.
I also tried to power on the device with S1 set to ‘0000’, but still get no reaction on my monitor.
I also tried this guide to recover my board, but I get
wating for QDL tty... in my Ubuntu host, and get no reation on my board monitor. Then I tried the following solution:
before running this command:
sudo /qdl prog_ufs_firehose_8996_ddr.elf rawprogram.xml patch.xml
which is used to flash all the bootloader, you will need to run this
command for UFS provisioning:
sudo /qdl --debug prog_ufs_firehose_8996_ddr.elf /UFS_provisioning/Toshiba/provision_toshiba.xml
But I still get
wating for QDL tty... in my Ubuntu host, and get no reation on my board monitor. It seems that my host cannot find the board (I have already connect with USB).
I guess the error is caused by
cat /dev/zero > /dev/disk/by-partlabel/boot, because the board output nothing after I run this command.
Could anybody help me, thanks in advance.