Oluwashina Engineer mode: *#110*01#
Factory mode: *#987# Enable
COM port: *#110*01#
-> Device -> Set UART -> PS Config -> UART1/115200 Restore factory settings: *# 987*99#
LCD contrast: *#369#
software version: *#800#

software version: *#900#
set default language: *#0000#
set English language: *#0044#