[Q] Problem to flash ruu

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http://forum.xda-developers.com – hi I have an htc evo 3d gsm . i relock with this "fastboot oem writesecureflag 3" I restored the device whith this guide: http://forum.xda-developers.com/show...php?p=25501212 now the devices , if I plug the cable on pc turns on in fastboot. HBOOT-1.49.0007 RADIO-11.25.3504_06_M How do I flash a ruu ?what exactly? (HowTos)