The downgrade from firmware 6.20 to 5.3 in the case of PSP 3000 is the fundamental distinction between models 03G and 04g. Recognition is not always easy, but to address this problem we think the coder J416 with his PSP Checker Module v1.0 , a tool that started on the PSP to control the model tells us we have the inclusion of the information contained in the version . txt.
From the various tests proved the existence of the model 09G in the market with basic firmware 6.30.