Hello @Lai,
It is worth noting here (and to be corrected in the release notes) that currently excluded hardware from 8.5.1 includes (as per forum thread System lockups on Balance 310 5G on 8.4.0):
We have firmware 8.5.1 working OK with these models where the internal cellular is NOT used (both disabled), though we await a solution for those where the internal cellular modems are getting used.
Please let us know when the new firmware 8.5.1 “Special Release” versions will be available for the Balance 310 5G/Fibre series.
Appreciate your assistance,
Marcus 