Hboot downgrade.does everything works ?

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http://forum.xda-developers.com – Hello. I used the wire Trick. My hboot Version is 1.53.0007 S-off. I would like to downgrade my hboot to 1.49. And use revolutionary to unlock. Can i downgrade to that hboot and flash newest Radio/ Firmware without Problems? Why do i want to do that? Becouse it is the only way to flash cm Roms. After i do that can i flash ics custom Roms without Problems? Does someone has a Download Link for 1 .49. Hboot ? Sent Form my HTC EVO3D using my big fat fingers. (HowTos)