This is a page covering the EFJ handhelds and mobile radios, mostly the 5100 and 5300.
If you have additional files not listed here, please upload them and update this page.
I have no information on using these files other than what's here. If you know something not listed here, add it please.
You take your radio, use pcconfigure to read and save the radio options file. Then open the file up with the update tool, add/delete the features, save file, then update file in pcconfigure and write radio configuration to the radio. Note that the feature file is ESN specific so each radio must be touched separately.