The interface on the e260v2 does things a little differently than the Fuze (which is essentially the same platform), meaning that the region cannot be changed at will on the device, reenabling the radio.
I thought I’d have a quick shortcut for you, but this will do the same thing:
Download the e200pa.bin file here. This is the original e200 series v2 firmware, 03.01.16. Look down the thread linked, and you can choose either the Americas version, or the Europe w/FM version. Personally, I’d just run with the Americas version, and then if you’re in the EU, simply select the proper region for the FM receiver, US / Europe.
Unzip the 03.01.16 file, and you’ll have the bin file for the Sansa. You can connect in either MSC or MTP mode, simply drag and drop the file to the root directory of the e200, and it will install automatically upon disconnect.
The FIRST thing it will ask you is language. Installing the firmware will enable the radio for you.