I bought my unit in 2014 so its only 8 years old. The issue according to GME is that the battery wasn't replaced at the right interval (due to COVID) and therefore cannot be refurbished. A heap of BS.
I'm an inshore sailor who is after something which is going to be of use should my yacht, VHF, phones, tender etc all fail me and it just annoys me that GME have the cheek to suggest (have decided) that these units are not serviceable.
My recommendation is that we give GME a very wide berth because they are not actually interested in safety at sea.