*#66*# Set Factory Mode
*#8375# Show Software Version
*#1234# A2DP ACP Mode
*#1234# A2DP INT Mode
*#0000# + Send : Set Default Language
*#0007# + Send : Set Language to Russian
*#0033# + Send : Set Language to French
*#0034# + Send : Set Language to Spanish
*#0039# + Send : Set Language to Italian
*#0044# + Send : Set Language to English
*#0049# + Send : Set Language to German
*#0066# + Send : Set Language to Thai
*#0084# + Send : Set Language to Vietnamese
*#0966# + Send : Set Language to Arabic
CHINESE MODELS: default user code: 1122, 3344,1234, 5678
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# Send
set English language: *#0044# Send
set English language (new firmware): *#001# Send
E900 software version: *#5002*8376263#
E900 full reset: *2767*3855#
