problem getting iOS 15.0.2 to run on 3750-x 48ps-s

Trying to get the 10Gbps service module to be recognised requires V15 according to cisco  WS-C3750V2-24PS-S  docs

Upgrading from V12.2 55 (or .58) fails on some switches I have tried

Process fails and I finish up at the switch: prompt

I can recover....

The switch can be regressed back to v12.2.55 or .58

But I can't get all of them up to v15

I have tried 5 to date

Same methods producing different results

2 worked

3 failed

All our problematic switches are 48 ports ones, we have some 24 port ones but they're newer and aren't affected. Our testing of the affected switches suggests it's related to their age/hardware revision:

VO1 – fail to load image, get stuck in continual reboot, eventually fail to ROMMON.

VO2 serial number beginning FDO15 – freeze whilst loading image.

VO2 serial number WS-C3750X-24P-S    beginning FDO16 and up – work fine.