I was trying to downgrade my PSP go to 6.20, but it warned me that the [Resume game] feature would be deleted. Does that mean I won't be able to use the
6.20 Firmware now available for PSP | Pocket Gamer
Free Mobile Gaming - PSP (L)ME Firmware 6.20--2.1, 6.39-10.1, 6.60-2.1: Adds NoDRM To ME Software Download
Sony PSP Go Console Black Version 6.20 + 6 Games + USB Charger | eBay
Installing Custom Firmware on a PSP : 9 Steps - Instructables
PlayStation Portable - Wikipedia
6.20 / 6.35 / 6.39 / 6.60 PRO-B10 LCFW released
PSP Firmware 6.20 Now Live
Installing Custom Firmware on a PSP : 9 Steps - Instructables