Lenovo check before flash.... very important:
# # # # 1111 # : Engineer Mode (To test all hardware and sensors)
# # # # 537999 # : Developer Options (Full)
# # # # 0000 # : ROM Version
#### 3333 # or #### 8888 # : OffLineLog
####5236# : LCD display name
####2834# : Close ES325
####8899# : UMS Mode
####2222# show serial number
####5993# show software version
####7777# factory reset
####46361111# Network Info in Android 4.4
# # # # 1111 # : Engineer Mode (To test all hardware and sensors)
# # # # 537999 # : Developer Options (Full)
# # # # 0000 # : ROM Version
#### 3333 # or #### 8888 # : OffLineLog
####5236# : LCD display name
####2834# : Close ES325
####8899# : UMS Mode
####2222# show serial number
####5993# show software version
####7777# factory reset
####46361111# Network Info in Android 4.4