Help needed wiping/reseting motorola SL4000

[nickyp]

Hello guys thanks for looking, I hate to join places just to ask for help but this was really my last resort.
before this i knew absolutely nothing about radios I've spent days looking through multiple forums to solve all problems i've had with a recent bulk purchase of raidos.
I managed to wipe all the dp3400 and dp4400 radios I had, but now I am stuck with this last one.

I have mototrbo cps 16 and the required firmware MOTOTRBO_R0209000001_140013_SL4000
I tried to do what i did for the other radios selected recover selected the radio and firmaware and click ok
device then says program mode and starts recovering device it gets to around 68% then gives me error #8862 Application has encountered an error
Failed to access a file in the device.

I have tried this on windows 10 pro 64bit same error every time, I also tried on windows 7 laptop that fixed my issue with the dp3400 but it also failed with the same message. the device is currently running fireware ver ro2.02.01 cp ver 01.0.10
any help or advice for wiping this would be really appropriated.
forgot to add I am unable to read the device in cps without the codeplug but have no interest in the data on there.
so I would like to wipe/reset before resale ideally.

 

[KG4INW]

The firmware currently in the radio is too old to make that big of a jump so locate an intermediate version. Might take several "jumps" and I'm not certain which exact one to recommend but start with something closer to it. Or, you might just leave it at that (once recovered) but it won't match the other radios.