i get negative reply from HTC...
3 days back i spend the whole day to break the rules...
i try to downgrade chacha to lower firmware
first i create a gold card used many steps and tools all failed atlast used "goldcardtool 0.0.7" and created gold card.
after that i download "ruu_chacha_htc_asia_wwe_1.57.707.2_radio_47.23.35 .3033h_126.96.36.199_release_228383_signed.zip" from the forum copied to the memory card
after that i look for temporary boot using "Vivid-Root-3-windows" but the gold card failed to boot i tried many time using adb shell. used both Vivid-Root-3-windows and doomlord v4 same time i didnt know what happen i get "#" in adb shell. i reboot the mobile and install cm7 by rename the recovery as PH06img.zip..
miracle it got installed with out any question...........
from gold card using recovery i install rom the asia rom.. it reboot once and installs fully.
now i have Asia rom installed now i login to htcdev and download PH0611000_Chacha_hboot_1.10.0000 for asia rom and install it..
now i can able to run fastboot command got token and got mail attachement of "unlock.bin"
"MY CHACHA WAS UNLOCKED"""""" yAHOOooooooooooooooooooooooooooo
after that rooted using doomlord , installed busy box all superuser programs get rights and binares are updating
sorry for my bad english