Upgrading to latest FW on MIB2 PQ Amundsen Unit

Hi all, I tagged this question onto a separate thread, but thought it was clearer to a make a new one to potentionally help others in the future with searches etc.

I'm running a MIB2 Amundsen from a Yeti in my Mk2 Superb (i.e The PQ platform 'full' headunit model, not a "display in console with the main unit in the glovebox" setup).

I quite regularly get random Android Auto disconnects (it drops USB connection and tries to use Mirror Mode, fails, then goes back to Smart etc), DAB often simply loses all signal etc so wanted to know if it's possible to upgrade the firmware and if so, what 'version' do I need to be looking for?

Also, I assume that if upgrading's possible, it won't lose the Android Auto/Carplay or is this something that would need to be re-enabled via VCDS and MIBToolbox?

Device Part Num: 5L0035680C
Current FW: MST2_EU_SK_PQ_P0253T
Hardware: H22
Software MU: 0253
Software Ver: H25.14.89_STD2NavPQ_EU

Thanks!