Kia ora All, I’m currently porting nerves to the Khadas VIM3 board and have got to the point its booting fine however fwup appears to be corrupting the written image - I have tested both fwup 1.13.2 and fwup 1.14.0 -

Khadas VIM3 (AMLogic A311D)
Mainline U-Boot 2024.01 (512-byte offset for SD card)
MBR partition layout with bootloader at sector 1 (512-byte offset)

Kernel panics with VFS: Unable to mount root fs on unknown-block(179,2)

The generated .fw image however contains a mountable squashfs filesystem
Corruption appears to occur with both mix burn and mix firmware.image - file headers appear intact but data is corrupted on raw_write() to root partition after byte 35 onward. Its reproducible using both zip and xz compression.

At the moment I’m getting a boot-able image by extracting the generated .fw file and using dd to write to sdcard

e.g. dd if=/dev/sda2 of=/tmp/extracted.img bs=512 count=524288

Passing the following in target.ex to use xz compression

config :nerves, :firmware,
mksquashfs_flags: [“-no-xattrs”, “-quiet”, “-comp”, “xz”]

I’m assuming its something stupid I’m doing, any insights would be appreciated.

Dale.