Stopped Booting

My Rock 5-b board has stopped booting from the SD card (constant green light on the board).
I have followed the steps to flash the spi boot firmware as per here to try and boot from an NVMe:

But get ‘failed’ upon seperate stages, what could be going on, do I have a dead board?
$ rkdeveloptool ld
DevNo=1 Vid=0x2207,Pid=0x350b,LocationID=105 Maskrom
$ sudo rkdeveloptool db rk3588_spl_loader_v1.15.113.bin
Downloading bootloader succeeded.
l$ sudo rkdeveloptool wl 0 rock-5b-spi-image-gd1cf491-20240523.img
Write LBA failed!
$ sudo rkdeveloptool rd
Reset Device failed!

Any help would be greatly appreciated!
Thank you,
William