After around 3 months of searching I finally recovered my player

I used this firmware LG_IS91B11V10_cm50012_2091n-v50_070206.rar
from the English S1Mp3 site although my player is clearly marked AK1025 and CM50016 it is fully functional. Perhaps some of the files at S1Mp3 may be wrongly named or may not be in the correct folders?
Biggest problem was finding the right place in the tools menu of the player to change the language back to English from the firmwares default of Simple Chinese :lol: