XBee Pro 2.5 reflashed to 802.15.4

I thought I remembered reading some time ago that it was possible to convert the Pro modules from one type to another. If so, does anyone know how to flash a 2.5 to an 802.15.4? I tried the x-ctu software (Had to dig up a VM of windows to run in linux), but trying to write the 802.15.4 firmware to the device failed and made it non-responsive. Thought I'd bricked it, but after restarting the Xbee it worked.

So anyways, if anyone knows of a tool or site showing how to do this, I would appreciate it.

I don`t think you can !!!!

You can make the 802.15.4 do the things 2.5 will do with 2.4 which is for the version 1 xbees.
They call it some thing like diginet 2.4 , which can be put on the xbee 802.15.4.