The analysis of Feature Phones (Keitai) has progressed very well in recent months.
The State of Japanese Feature Phone Preservation in 2023
DoCoMo Debug Cable Preservation Info
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And it can be run on an emulator. (videos: Rockman.EXE Legend of Network, Densha de GO...
@The Real Jdbye, I thought about that and I have blank DVD's and Blurays but honestly after like 90 songs I just listen to it a couple of hundred times toss it out and burn something else or have like 2-3 CD's. Florida here the heat in the car tends to ruin the CD's after like a few months even commercial pressed ones don't last too long.