I have a Xiongmai based CCTV DVR with a Hisilicon chip. I am able to run the exploit to get into telnet and get into telnet but I still can't see any recorded files.

It runs Sofia as it's DVR software which is storing to a SATA HDD at /dev/sda but I am unable to access the files as I don't seem to be able to mount the drive.
There are no partitions on the drive.

Does anyone know a trick for these?