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[Nix_Lon]

I have two (2) games to test whether saving works or not.

• WarioWare Inc. (2003/SRAM)
• M&L - Superstar Saga (2003/EEPROM) but I've already SRAM patched this one via GBATA.

So I did this setup but to no luck, data retention on the SRAM still doesn't work.
However, I found out that lesserkuma's GBA multimenu might be the faulty one (I have "battery_present": true).
I found this out by using ArcheyChen's GBA multicart menu and data retention on the SRAM now works properly.
Even the setup that I did earlier works properly as well. Thank you!

I reported this issue to Lesserkuma, they confirmed that battery-backed SRAM saving may have been broken from v0.11 to v1.0.
This specific issue was recently fixed (v1.1). I've tested and can confirm that saving works properly.

 

[Hunter]

I ended up doing one of the newer ones like @Nix_Lon posted above, and it works lovely

diodes are B5817W SOD-123

https://www.aliexpress.com/item/1005005580395909.html