This is a much older thread but I figured I'd try and see if I can get some help anyway

Got a TI-84 Plus SE from eBay specifically to put Zelda on.  Unfortunately the save function isn't working.  I used to have the same model calculator a few years ago where the save function worked, but unfortunately the calculator ended up broken

I'm not sure what I'm doing wrong.  I have what appears to be the latest version, 0.2.05, tried changing the backup battery.  Calculator keeps its normal history of calculations

Link's Awakening fits on the calculator, just doesn't save my game

_{Edit (Eeems): Split into it's own topic}

My save file is just gone upon exiting the emulator as if it were never played before, it otherwise plays as normal

The Calculator's OS is 2.43 also, if that helps

A little update, I ended up buying another calculator on ebay (the one on the right) which is running OS 2.40 and it retains the save file

I'm assuming a file called ZeldaDX1.8xv is the save file.  It's showing up on both calculators, but the one running OS 2.42 isn't reading it

Is there any way to get OS 2.40? I tried sending this OS to a newly bought 84 plus Non-SE and I keep getting error messages.  Though I think it may be from trying to go from a Silver to a non-silver, I don't really want to take that risk

The one where the save works is S-0806F

The one that doesn't work is P-0809M (runs the game but doesn't save)

Both are Silver Editions

Running it on a newly bought 84+ (Zelda didn't fit so I tried Prince of Persia) looks terribly glitchy with sprites and numbers scattered everywhere lol