HTC tried to stop us. They made signed images, a signed kernel, and a signed recovery. They locked the memory. In short, the ThunderBolt is their most locked-down phone to date.
We fixed it for you. Unlike the root method we described yesterday, following the instructions below will provide S-OFF, remove signature checks, and unlock eMMC. Enjoy!
Rooting The ThunderBolt - Version 2.5
Pros
- Root with read/write access to /system
- Ability to downgrade and flash any RUU (i.e. signed firmware)
- S-OFF
- Fully unlocked bootloader
- All ThunderBolts survived testing
Cons
-
Voids warranty
-
Could brick your phone if you aren't careful



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