[Jackpine]

There are three possibilities:

1. You may have "toasted" your Gryphon if you didn't disconnect it when you jump-started the truck.
2. You may not have let the Gryphon boot properly when you changed the battery.
3. The firmware in the Gryphon may be corrupt due to your battery and jump-starting issues.

Let's assume it's the second, because we can do something about that. Disconnect your Gryphon. Turn the ignition key to ON without starting the truck and then plug the Gryphon back in. If it shows you your "hex" code, you should be back in business and should be able to change the tunes.

If that doesn't allow you to change to a different level though, you need to find out if you CAN change back to Level 0. If the Gryphon showed you your "hex" code, that should be possible and I recommend you try that. If you succeed in getting it to Level 0, start up Pegasus on your PC and connect your Gryphon to the PC. Click on [Updates]->[Gryphon Update Manager] and apply both the calibration and firmware updates you will probably see. That should fix any problem with the firmware. Then, click on [Updates]->[Download Custom Tunes] or [Updates]->[Targeted Functions] (depending on your version of Pegasus) to restore your custom tunes. If that all works, you should be back in business.

If these steps didn't work though, you've probably damaged your Gryphon by jump-starting your truck with it connected. Bill will have to help you.