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Honorary Poster
Just want to share this 
Tested/Working Code:
##775# โ EPST/PRL โ PRL Settings
##786# โ EPST โ Status Menu
##3282# โ EPST โ Data Programming Menu (User Name, Advanced, Restore, Enable HFA, DSA Server, MMSC URL)
##2539# โ EPST/A-Key โ Data A key menu
##7738# โ EPST/P_Rev โ Protocol Revision
##8626337# โ EPST/Vocoder โ Unsure
##33284# โ Debug โ Debug Menu โ (Debug Screen, Test Calls, RC Data, HDR/1X Selection, Voice Privacy, DTMF Set, Korea Mode Set)
##3424# โ Diagnostic โ Connect to phone in diag mode
##4772579# โ Reset the GPS
##72786# โ changes DSA back to Factory
##889# โ enables TTY
##34971539## โ update firmwire
##7594## โ change the End Call / Power button action
##273283*255*663282*## โ code opens a File copy screen where you can backup your media files
##197328640## โ enter into Service mode
##232339## โ WLAN test (Use โMenuโ button to start various tests)
##526## โ WLAN test (Use โMenuโ button to start various tests)
##528## โ WLAN test (Use โMenuโ button to start various tests)
##7780## โ Factory reset
*2767*3855# โ Factory Format
##232338## โ Shows WiFi MAC address
##1472365## โ GPS test
##1575## โ Another GPS test
##232331## โ Bluetooth test
##232337#*# โ Shows Bluetooth device address
##8255## โ launch GTalk Service Monitor.
##4986*2650468## โ PDA, Phone, H/W, RFCallDate
##1234## โ PDA and Phone
##1111## โ FTA SW Version
##2222## โ FTA HW Version
##44336## โ PDA, Phone, CSC, Build Time, Changelist number
##0283## โ Packet Loopback
##0*## โ LCD test
##0673## OR ##0289## โ Melody test
##0842## โ Device test (Vibration test and BackLight test)
##2663## โ Touch screen version
##2664## โ Touch screen test
##0588## โ Proximity sensor test
##3264## โ RAM version
โโ Was only able to get the following working on CM6 Rom โโ
##4636## โ Phone Information โ โPhone information, Battery information, Battery history, Useage statistics, Wifi informationโ (froyo only)
Confirmed not Working:
##UPST# โ modem directory
##778# โ EPST โ Advanced Programming
Unverified code:
##37872# โ Full Speed USB Mode โ Enable/Disable
##3386# โ DDTM โ Enable/Disable
*#0011# Service menu
*#0228# Battery Status
*#2454# Low Battery Power Off
*#0283# Receiver Packet loopback
*#0782# RTCTimeRead displays time (and seconds)
*#147852# Allows you to access many screens including CDMA DATA Connections
*#369852# Allows you to access many screens including CDMA DATA Connections
*#1472365# GPS Setup
*#232331# Bluetooth RF Test Mode
*#1575# Service menu
*#197328640# Service menu
*#2767*2878# Service menu
*#32489# Service menu
*#4238378# Service menu
#6984125# Service menu
*#7284# Service menu
*#9090# Service menu
*#2580# Service menu
*#2664# Touchscreen Firmware Version
*#2664# Main Firmware Update
*#3264# RAM Version
#3282*727336# Current Data State
*#745# Sec_RIL_Dump allows you to copy to phone memory, clear ril log, (greyed out copy to SDcard and view RIL log), exit
*#7450# Phone Dump Mode Disable
*#7451# Phone Dump Mode Enable
*#7780# Factory Reset
*#9900# SysDump copy logcat/dumpstate/dumpsys, enable debug log, copy watchdogdumpstatelog)
#0# โ Test Utility โ SAFE TO PLAY WITH
*#0289# Melody Test again?
*#0673# Melody Test SAFE TO PLAY WITH
*#0842# Vibration test SAFE TO PLAY WITH
*#2263# ??
*#2663# Touchscreen Accuracy Test SAFE TO PLAY WITH
*#767*3855# Factory Format โ CRAP!! WARNING!!!
Use the code wisely, some code have an effect that cannot to restore

Tested/Working Code:
##775# โ EPST/PRL โ PRL Settings
##786# โ EPST โ Status Menu
##3282# โ EPST โ Data Programming Menu (User Name, Advanced, Restore, Enable HFA, DSA Server, MMSC URL)
##2539# โ EPST/A-Key โ Data A key menu
##7738# โ EPST/P_Rev โ Protocol Revision
##8626337# โ EPST/Vocoder โ Unsure
##33284# โ Debug โ Debug Menu โ (Debug Screen, Test Calls, RC Data, HDR/1X Selection, Voice Privacy, DTMF Set, Korea Mode Set)
##3424# โ Diagnostic โ Connect to phone in diag mode
##4772579# โ Reset the GPS
##72786# โ changes DSA back to Factory
##889# โ enables TTY
##34971539## โ update firmwire
##7594## โ change the End Call / Power button action
##273283*255*663282*## โ code opens a File copy screen where you can backup your media files
##197328640## โ enter into Service mode
##232339## โ WLAN test (Use โMenuโ button to start various tests)
##526## โ WLAN test (Use โMenuโ button to start various tests)
##528## โ WLAN test (Use โMenuโ button to start various tests)
##7780## โ Factory reset
*2767*3855# โ Factory Format
##232338## โ Shows WiFi MAC address
##1472365## โ GPS test
##1575## โ Another GPS test
##232331## โ Bluetooth test
##232337#*# โ Shows Bluetooth device address
##8255## โ launch GTalk Service Monitor.
##4986*2650468## โ PDA, Phone, H/W, RFCallDate
##1234## โ PDA and Phone
##1111## โ FTA SW Version
##2222## โ FTA HW Version
##44336## โ PDA, Phone, CSC, Build Time, Changelist number
##0283## โ Packet Loopback
##0*## โ LCD test
##0673## OR ##0289## โ Melody test
##0842## โ Device test (Vibration test and BackLight test)
##2663## โ Touch screen version
##2664## โ Touch screen test
##0588## โ Proximity sensor test
##3264## โ RAM version
โโ Was only able to get the following working on CM6 Rom โโ
##4636## โ Phone Information โ โPhone information, Battery information, Battery history, Useage statistics, Wifi informationโ (froyo only)
Confirmed not Working:
##UPST# โ modem directory
##778# โ EPST โ Advanced Programming
Unverified code:
##37872# โ Full Speed USB Mode โ Enable/Disable
##3386# โ DDTM โ Enable/Disable
*#0011# Service menu
*#0228# Battery Status
*#2454# Low Battery Power Off
*#0283# Receiver Packet loopback
*#0782# RTCTimeRead displays time (and seconds)
*#147852# Allows you to access many screens including CDMA DATA Connections
*#369852# Allows you to access many screens including CDMA DATA Connections
*#1472365# GPS Setup
*#232331# Bluetooth RF Test Mode
*#1575# Service menu
*#197328640# Service menu
*#2767*2878# Service menu
*#32489# Service menu
*#4238378# Service menu
#6984125# Service menu
*#7284# Service menu
*#9090# Service menu
*#2580# Service menu
*#2664# Touchscreen Firmware Version
*#2664# Main Firmware Update
*#3264# RAM Version
#3282*727336# Current Data State
*#745# Sec_RIL_Dump allows you to copy to phone memory, clear ril log, (greyed out copy to SDcard and view RIL log), exit
*#7450# Phone Dump Mode Disable
*#7451# Phone Dump Mode Enable
*#7780# Factory Reset
*#9900# SysDump copy logcat/dumpstate/dumpsys, enable debug log, copy watchdogdumpstatelog)
#0# โ Test Utility โ SAFE TO PLAY WITH
*#0289# Melody Test again?
*#0673# Melody Test SAFE TO PLAY WITH
*#0842# Vibration test SAFE TO PLAY WITH
*#2263# ??
*#2663# Touchscreen Accuracy Test SAFE TO PLAY WITH
*#767*3855# Factory Format โ CRAP!! WARNING!!!
Use the code wisely, some code have an effect that cannot to restore