tong said:
press *65# as system pin code to access secret menu to reset factory
setting
hope these help!
Note: This must be done at the menu item "System Settings?" befor
selecting it and being asked for the System Pin which you are trying t
reset to 0000.
There are no beeps as you enter *65# but when successful, it wil
display "System PIN Reset" and beep. Your System Pin is now 0000.
This is for Siemens Gigaset 2420 reset System Pin to Factory defaul
PIN