Turned box on this morning to find the Er01 error.

I have reloaded the v7 firmware which seemed to burn OK but when I try the all chunks file it does not seem to burn and ends with an upgrade error message.

Open Serial Port..
Sync to serial port..
Send Address..
Download All Chunk
Burn Flash, DO NOT power off!
->Error:No Packet receive!
in execute command:burn
Retry...OK
->Error:No Packet receive!
in execute command:reboot
Retry.....Burn error!

I used both these files to recover from the red light/blue light problem a while ago
so I think they are the correct ones.

Any help appreciated