Believe it or not, I fixed the problem just by chance, and confirmed is a problem with the hex.
With an ASCII editor (Notepad++) edited the file PAWN_011.hex and changed just one byte 
These are the final 4 lines of code from original file:
:015D4300015E
:0400000508044000AB
:00000001FF[/code]
I just changed the first byte of the before-last line, from 04 to 03: (edited) believing the program could be too long for App Area 4 and coiuld be changed to 3rd one.
:015D4300015E
:03<— 00000508044000AB
:00000001FF[/code]
After this change, Pawn_011.hex loaded with no problems AND QuadPawn refreshed correctly applications already in pawn drive 
Don’t ask me why … I just don’t know why it worked 
(edit 2) Same mod worked for AlterBios ALT_04.hex