I found that if the self righting doesn't work on your X-Maxx and you have the 6511 bluetooth module.

1. Open the TraxxasLink app and make sure it is connected to your radio.

2. Next, if you have an 8s stock x maxx, reprogram the receiver as a 6s, then back to an 8s. If you have a 6s, preform the outlined steps in reverse. Make sure the receiver is programmed to your specific version of the truck to make sure it is the proper version of the algorithim to compensate for the wheelie bar.

3. Test and if it works, enjoy the fixed Self Righting on your X-Maxx.

Hope this helps anyone who has this problem.