Not interested in the other working unit at the moment, sounds like they may have different chips. Let's just concentrate on the 'bricked' one right now.

The one with the boot loop is a 205W right? The letters 'ID' following the Software Version are short for Hardware ID. What HWID do you get from G7toWin for the bricked unit? If you haven't managed that yet, follow this:

Firstly open G7to Win and keep it visible on your desktop. Select 'GPS' and in the dropdown list, hover your cursor over 'Get GPD ID' ready to click it.

Remember you must put it in pre-boot mode tro access G7toWin because unlike your other working unit the faulty one cannot be seen in Mass Storage Mode. Most 2x5W you can simply hold the upper LH corner and plug in the mini-USB. Keep holding the corner and quickly click 'Get GPS ID' in the G7toWin window. If you get an error message just click OK, it will then show the info. Remember if you don't click 'Get GPS ID' and any error message OK button within about 30 seconds you will have to start again.