Pichichi that swap trick I figured out works you're right, but some SA1 games will fire up if you're lucky but it's usually not consistent like he's saying it was. I'm surprised it worked for a few weeks let alone two times in a row.
I made a video of it:
TO make your game run:
- Put any non SA1 game in the slot
- Power ON
- When the game shows, press+HOLD Reset (blue screen appears)
- Swap out game, pop in SMRPG
- Release reset button and the game will boot up with no problem
I got upset when my chipped games wouldn't work after seeing them run online so I started goofing around with all sorts of tricks and figured that one out pretty quick after getting the v2 of the Supaboy last year.
Getting the SA1 games working only left me with 3 games that flake out. SDD1 chipped SF Alpha 2, Yoshi's Island commits suicide visually, and Stunt Race FX(and annoyingly Starfox2 which uses it as a repro) will work for 5 minutes then just soft reset like some store kiosk with a kill timer on it.
Also if that annoying d-pad is pissing you off making some games fairly or completely unplayable, search my user name and supaboy as I created a mod you can do with nothing more than a 2 cent piece of plastic and some sandpaper to size it up right and it will work as solidly as a real snes pad.