Well on this rather wet morning i thought I will back up my TX and upgrade to 2.2. So, uninstalled Companion 2.1 and installed 2.2. Wrote the firmware into the radio. Pretty painless. However, the SD card layout is slightly different than the earlier version and the radio came up with some issues, not finding some files. Scratched my head for a bit then thought I'll shortcut this problem.
Took out the 1Gb SD card and found a spare 8Gb Sandisk card. Inserted it into a card reader and copied the downloaded/unzipped SD file to the card. Then inserted the card into the radio. All sorted. Although I had to play around a bit with some of the sound files. On the TX everything appears to be working except I have lost the Welcome voice when switching on but thats no big deal. Out of time to fiddle but later will check the Fox glider still answers to the radio.
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Note you don't have to have all the sound files in the new batch. There were a few i had to smile about, eg; 3D mode activated and similar warnings. These won't be needed by me! I have not looked at all of them yet but have only copied over the ones I need or wanted.