Secret codes for China phones

Secret codes - Fly:

M100 software version: ####0000#
2040(i) reset defaults: *#987*99# Send
MX200 reset defaults: *#987*99# Send
MX200 software version: *#900# Send
SL300m reset defaults: *#987*99# Send
SL300m software version: *#900# Send
SL500m reset defaults: *#987*99# Send
SL500m software version: *#900# Send
MP500 reset defaults: *#987*99# Send
MP500 software version: *#900# Send
Set language to English: *#0044#
Set language to Russian: *#0007#

Secret codes - Konka :
C926 software version: *320# Send
C926 set default language: *#0000# Send
C926 set English language: *#0044# Send
Service codes GStar:
GM208 (Chinese Nokea 6230+) engineering menu: *#66*#
Set language to English: *#0044#
Set language to Russian: *#0007#

Secret codes - GStar:
GM208 (Chinese Nokea 6230+) engineering menu: *#66*#
Set language to English: *#0044#
Set language to Russian: *#0007#