Old Section 1, skip this! Download the recommended RxTools build for this guide
here
TEMPORARY MIRROR LINK: Here
If you choose to use rxTools 2.6 or 2.5.2, skip this section.
Download
Python version 2.7
Direct Windows installer link
If you are using Windows, right-click the rxtools.rar and open Properties. If at the bottom, it says the file is blocked, check "Unblock" and Apply. This should take care of any problems you have with the following steps.
Mac users: If you're having problems running rxtools (black screens, Installation Suite errors, etc.) try extracting the rxtools zip using a reputable .zip extractor or a Windows PC (or virtualbox).
Backup and delete any "rxtools" folder that you may have on your SD card before doing the following steps!
1. Put the "rxtools" folder on your SD card root.
2. Run cdn_firm.py in the "Tools" folder. It will generate a
firm folder in the same folder that cdn_firm.py is in. The firm folder must go into the rxTools folder like so: SD:/rxtools/firm