(12C/11C) Changing the firmware

[NazarK]

Well the seller got back to me and just said that if they have another 11C, they would swap mine with it (like that's ever gonna happen lol). His listing did say "11C financial calculator" so I assume he thought it was a worse version of a 12C and that's why he sold it cheap. Shipping it back would cost another $5 so I'd rather just print the 12C layout and tape it on top.

In my free time though maybe I could try putting an EEPROM instead of the ROM it has and put the 11C's ROM on it? It would be a huge pain to get it working but could be cool