Smiths: the first bank of SRAM on non-prototype EZ units is traditionally used by EZ for alladin's "EZ disk saver" or some such thing, basically they used a struct to keep track of what was flashed to the card and what was backed up (on other cards, changing games had to shuffle the first games saver elsewhere as their client patching always used the same sram space - I'm not sure if gelu has accounted for this.) When booting 3in1 (actually, most EZ GBA products) directly to GBA mode (from a gba or the DS main menu), non-prototype units automatically start at the second 64k (bank 16, or SetRampage(16).) Just thought I'd mention it, since you were worried about the ini stuffs and finding a place to keep this info while EZ already made it to work to spare bank 0.
---
Not sure if it is a bug or "feature", or just my own annoyance - but thought I'd mention it. When scrolling with the dpad vs scrolling titles with the touch screen (when the list exceeds the screen size), they act differently with respect to leaving a empty/unused space at the bottom of the list (this is in official as well as AIO1.2, I didn't catch the beta) - dpad does not over bump up the list while touch screen does.