I want to use the diagnostic port on the ME909u-521.
Question
I want to use the diagnostic port on the ME909u-521. Can I do so?
Solution
The diagnostic port was open on the ME909u-521 until the firmware 12.636.11.01.00. If you want to use the diagnostic port you'll need to contact us so we can give you the shell codes to unlock the module. The shell codes are generated by the IMEI number on the module.
The command to open the diagnostic port is the command AT^SHLOCK. Send the AT Command AT^SHLOCK=1, to open the diagnostic port. The port will close when the module is power cycled or restarted.