Can't Upgrade ePMP to 4.5.6

We just tried to upgrade some ePMP radios from cnMaestro from 4.5.5 to 4.5.6 and 2 out of 7 worked. The rest got this message “SW update file download failed”.

Tried twice more on the remaining 5 and got the same message.

Tried using the pkg3 file in CNUT and that failed as well. Any suggestions?

Could you please try to perform upgrade via GUI?
What radios are affected? F300?F180/200?

Thank you