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Palm Treo 755p was the dirst mobile i put in diag mode after carefully following D K JI's guide Since then the most difficult part i come across is remembering how to get it in diag mode as i forget codes and methods all time, so i am gonna list it out for me as a ready guide. Before you begin: Get latest / old / Modified drivers for your device Get respective cable and off you go Palm device Sprint Treo 755P / Sprint Treo 800w ##3424# for ##DIAG# select the port Palm Pre / Pixi & Plus Bypass Activation Download Code generation from Hitesh post pass key gen get SN from device back or Info Navigate to phone dialer. Type ##USBPASS#, enter the 5 digit code recieved from the pass key gen. Navigate to 1 and change the port to diagnostic port. Plug in phone. You have access to diagnostic port. Don't forget to go back to the usbpass and take diagnostic mode off when complete it gives option to charge or mtp mode. This key will also work to enter in palm code to edit data settings such as mmscurl in ##3282#. Samsung Mobiles Fascinate Manual Program From the phone dialer screen, press * * 7 7 2 Enter 000000 Scroll down till you see SVC MODE NAM 1 CDMA Directory number Tap to enter MDN then hit enter Enter MIN number then hit enter Now just keep hitting enter until the phone reboots Diag mode Go to Menu, Settings, Applications, Development and check "USB Debugging" Bring up the dial pad on the phone and enter **87284 (**USBUI) you should have 2 different options on the screen select MODEM for both options phone is now on diag mode 16digit Pass: 2010031619780721 EPIC Manual Program Enter ##000000# Select edit mode and enter 000000 Type in your 10 digit MDN number and hit enter Type in your 10 digit MIN number Now just keep hitting enter until the phone exits the programming menu and reboots DIag Mode In 2.1 Just enable USB debugging (Go to Menu, Settings, Applications, Development and check "USB Debugging") go to Wireless Controls and Enable Dial up Networking Epic 2.2 or higher Enable "USB Debugging" Bring up the dial pad and enter ##8778# You should have 2 different options on the screen Select MODEM for both options Reboot phone with usb plugged in 16 digit Pass: 01F2030F5F678FF9 Continum Manual Program Same as Fasfinate Diagmode Bring up the dial pad on the phone and enter **87284 (**USBUI) you should have 2 different options on the screen select MODEM for both options phone is now on diag mode 16 Digit Password 2010031619810219 EPIC 4G Manual Program Same as EPIC DIAG mode enable "USB Debugging" enter ##8778# You should have 3 different options on the screen Select the "ALL" option NExus S 4G Manual Program Enter *#*#000000#*#* Select edit mode and enter 000000 10 digit MDN number and hit enter 10 digit MIN number Now just keep hitting enter until the phone exits the programming menu and reboots Diag Mode (thanks Tarun Kabra Ji) ENABLE "USB Debugging" dial enter *#*#8778#*#* 2 different options on the screen Select MODEM for both option Juke and Smooth Manual Program Go to Menu, Settings, * Enter 000000 for SPC Code or what u have Select Network Settings Choose Phone Number and enter (MDN), press OK Choose NMSID to enter MIN (00 followed by the MIN) Press OK Press Exit when done Phone will restart and Programming is complete. Diag Mode Menu - Setting & tools - plress # - dial MSL - go to MTP settings - Select MSM for DIag and MTP for music transfer ----------------MORE to CUM---------------------- To bypass activation screen, press emergency call button, then at the dialer, press* # 8 3 7 8 6 6 3 3, press the Home key. Samsung S3 / S2 Some Samsung phone the diag mode is in hidden Menu get it by (thanks to Parin) *#22745927 then enable hidden menu Then dial *#7284# or ##3424# Select QXDM USB Settings & Select Last option where there id DM (diagnostic mode) HTC Mobile ##3424# (tarun Ji) Motorola Mobile BP Tools is supported by (thanks Kapil Ji) Motorola Droid Bionic Motorola Droid 3 Motorola Droid 4 Motorola Droid Razr Motorola Droid Razr Max Some new bootloader on Droid X2 & Photon also support this MOre to Come --- if I have missed something please guide me or post below as your contribution