I have a Yamaha THR30W11 & a Line 6 G10T, both bought new in Feb 20 and used every day since with absolutely no problems. BUT, following the manufacturers instructions I have updated the firmware in both items as per their instructions and both were confirmed as updated sucessfully.
HOWEVER - THR30 now will not charge the G10T at all, nothing. If the G10T is plugged in with 'some charge' still in its battery, the amp simply fully discharges it within a short time. Previously a full charge from red led only took a couple of hours max. Now no charge at all... And am now left with an unuseable G10T...
I have emailed the shop I bought from - waiting for a reply.