Thanks Kunix, as if by magic the disassembler with the script is much easier, I will keep my fingers footprint, hehe.

Regarding the function you said, for many laps I'm giving, not think it's the screen showing the text: TXT_New is older software etc ... ".
The other code that surrounds him is not very logical.

I searched other texts related to above as:
0x47c TXT_updating_gps_Firmware_str_m
0x487 TXT_validating_update_str_m

And I can not find anything. And these two sentences would have to be closely related to the previous one.

I tried to follow the advice of Alex and I can not fix it.

ArgG .. I feel sorry .....