Hardware making a flash card

[kotor]

Hey guys this is my first post and i have been searching but cannot find any info on this.
Is it possible to flash one of those 100in1 game packs
i heard off someone they are only ROM but i thought it may have been possible to change this with software

 

[ditto_n]

No, definatly not. Flash Chips (NOR) are much much more expensive then one-time write chips (ROM). No way would a manufacturer use NOR if they only need to write once.