I did not have a 1.8V serial usb when I started this, so I thoroughly rogered the kindle before I actually saw the kindle commandline. The kernel booted, but warned that no kinit could be found.
Breaking into recovery still worked, so
Got me back a working, but still jailed kindle at the latest firmware.
Uboot to the rescue: setting the boot argument to mount the root partition together with init=/bin/sh gave me root access. Remount rw, repasswd root, and all was well.
In the process I did try uboot/bist/fastboot uploading of other ppls partitions and kernels. The MMC in the PW3 seems too new for older kernels, and this will give mmc0 unrecognized EXT_CSD errors (-22) errors.
Hope this provides breadcrumbs for others in the same straits.
Breaking into recovery still worked, so
- enter into recovery abc menu
- format user partition
- expose fat partition
- upload amazon supplied 5.6.5 update
- install update from user partition
Got me back a working, but still jailed kindle at the latest firmware.
Uboot to the rescue: setting the boot argument to mount the root partition together with init=/bin/sh gave me root access. Remount rw, repasswd root, and all was well.
In the process I did try uboot/bist/fastboot uploading of other ppls partitions and kernels. The MMC in the PW3 seems too new for older kernels, and this will give mmc0 unrecognized EXT_CSD errors (-22) errors.
Hope this provides breadcrumbs for others in the same straits.