To start my phone is
HTC HD7 on o2UK,
os version: 7.10.8107.79
hardware version: 0002
radio software: 5.71.09.02a_126.96.36.199u
radio hardware a.120.0.d4
chip soc 188.8.131.52
I am wanting to downgrade so i can flash custom roms to my phone.
so far i have tried to downgrade by using goldcard with Y-Cable.
problems with that are,
1 stuck in usb host screen using micro sd 1gb with card reader.
2 got passed usb host screen with my flash drive 7gb but getting message "not allow".
i have tried flashing with rom update utillity using SCHUIMG.nbh, SPL_signed.nbh european rom. but goes to 1% then fails and phone reboots.
i have only had this phone a few days so i'm sorry if i have missed something simple.
any advice would be great.
thanks in advance,
update also tried branded o2 RUU_Schubert_S_O2_UK_4.05.206.01_Radio_5.69.09.29a _184.108.40.206_Signed_SCHUBERT_RELEASE
still same outcome