Last Updated: June 5th, 2012
Our own Justin Case has been collaborating with Reid Holland (erishasnobattery) on TacoRoot – a tool that should root just about any HTC smartphone – for some time now, and with the recent additions to HTC’s official unlocking tool, they’ve decided to release it.
At the moment, it’s quite gnarly – it’s only a temporary root for now, and there are various issues with it (see below). That said, it’s incredibly useful for downgrading phones like the myTouch 4G, which can’t be unlocked or rooted with the most recent version of their software.
Last Updated: December 29th, 2011
HTCDev.com has been unlocking the bootloaders of select HTC smartphones for some time now, but up until today, the Rezound was not among their ranks.
: HTC Vivid is unlockable as well - thanks again for the tip
Update #2: HTC just updated the bootloader unlock site and announced that "All HTC Android devices launched after September 2011 are unlockable. The website will be updated accordingly to reflect this in the coming weeks.