Update: Do not download or install XDAanipulator unless you have a serial cable already, and need to reset the call counters or change the IMEI on phones with Radio software prior to 4.20. To remove the SIMlock, simply install the XDA-developers Special Edition ROM, which, apart from unlocking the device, adds lots of other extras. Look at the forum for details on where to get it.
Since its release, the XDA Manipulator has been this site's most popular download. We had never figured so many people would need a tool with such modest functionality...
As you can see in the screenshot above, the XDA manipulator allows for reading the unlock code as well as for resetting the SID lock (also called SIMlock, when the phone is locked to a set of providers) and the GID lock (lock to a specific SIM card). It also allows one to reset the call duration timers, and to change the IMEI.
Instructions Buy or build a serial cable or cradle. The XDA manipulator does not work over USB. (yet...) Download and install the program. Put your XDA in "Bootloader Mode" (hold power button and perform a soft reset). hook it up to the PC using the serial cable, on any serial port up to COM8. Use the program. It's pretty self-explanatory. We've tested this on Radio version 4.06, 4.10 and 4.20. If you dare, please let us know if you find it to work on other radio versions.
The manipulator contains an expert feature that allows making a ROM-dump of the Radio part of the phone. If you press Ctrl-R, a ROM dump is written to "c:\RSx-xx.bin", which is meant to be renamed to reflect the Radio Stack version. Being able to write this file will allow you to study the insides of your Radio ROM. There is no tool to write the ROM back into another Radio, as this would be too dangerous unless we know much more about the phone.
On Radio software version 4.20, the makers of the XDA's modem part have included some extra security features. These have been circumvented as far as being able to take off the SIMlock, but the other features of The Manipulator (such as IMEI changing, call-duration counters reset and ROM dumping) will be disabled when a version 4.20 is encountered.
As usual, XDA developers software comes without warranty, but with sourcecode. Older versions can be found here. The XDA Manipulator is free software. However, the XDA developers retain the copyright, and you may not charge for it, or alter it to remove our name from it.
Please bear in mind that you may need to manually remove any older versions of The Manipulator before installing this version.
And please remember people: