I recently purchased an EZ Flash 3in1+ from Leetmod and I can't save any gameboy advance games with or without patching. I've used GBATA and the EZ4 client software to patch the roms. I have tried GBAExploader 0.58b, GBAldr .1 modded for 3in1 plus, and the built in loader from YSMenu, but saves do not stay in the SRAM. After doing some more troubleshooting, I decided to check the SRAM battery with a multimeter and it appears as though the battery is dead. Can I replace the original battery with another battery from another cartridge? Or should I order a specific type (in which case I'd probably just get another 3in1 cart)? Would this be something I could pick up from Radioshack and what are the specifications of the battery i.e voltage? I think the voltage may be something around 3-3.3v? Other than the SRAM not working currently, everything else works quite well. I am pleased with rumble support, opera browser, and the ability to load GBA games to PSRAM or NOR.