Hi

I got an mp44 with software 2.05
The system has an eprom, can it be upgraded to later version when yes which rom must I program in eprom or can it be modded to flashrom. I also wanted to replace the battery but the partnr is hard to read can anyone who can tell me the rype of battery I can use.
My system has 4MB that is the maximum the system supports I think.



https://photos.google.com/share/AF1QipO5Cn-L6An6mbW578LXXCt03H8PjBS_JPGWwL6uDNM5zxdKeWWY7kznrTjyC6f2cg?key=c3BKYlEwazROc0JWdFJRcGtlSEN3ay1FVGRYNi1B


https://photos.google.com/share/AF1QipPzmCCzpSUrx9WwOYFQJKXDRNmNp1XrZuwCTYiXgL-guZIrslTHMMaWxBE2ibRhhg?key=bEpzZFFxQnVaWDJjWnV1TE5pY0pNY1d1cC0xN3JB