[HD7 General] sh4d0w86:
begin here​

find out device's Bootloader version. Settings -> About -> More Info

make sure device's battery is greater than 60% before proceeding.

download task 00 and task 29, here and extract contents.

note. USB drivers may need install. e.g. Active Sync / Windows Mobile Device Center

continue to next Step according to Bootloader version...

instructions to downgrade OSPL​

if Bootloader version is 5.xx

a. for those with a Pre-Mango Zune Backup,

- see Zubair Kirmani's thread, here.

b. for Europe devices,

- see ansar.ath.gr's thread, here.

c. for everybody else,

- try Y-Cable method here

- or Goldcard method here.

if Bootloader version is 4.xx

download non-Test NoDo or Pre-NoDo Radio specific to your device, here.

extract the contents of the 7-zip.

turn off device. then while pressing the volume down button, boot your device.

device should be in Multi-Colored screen, which says 'Serial' in the white section.

connect device via USB to PC

device should now say 'USB' in the white section.

in the 'stock' folder of the extracted Radio, flash SPL_Signed.nbh using task 00.

note. this will also downgrade the Radio, as well as the SPL.

once flash successfully finishes, disconnect device from USB.

repeat Steps #1, #2 & #5.

instructions to install RSPL​

if Bootloader version is 3.xx or 2.xx or 1.xx

download XSPL, here.

extract the contents of the rar.

run DFT_RSPL..._LAUNCH.exe

please, read information text. select 'Next' button.

power off device and enter Bootloader.

connect device via USB to PC, 'Serial' will change to 'USB' once connected properly.

select 'Next' button on the XSPL wizard and it should now detect your device.

note. do not proceed if OSPL is 5.xx or 4.xx, instead go to Step 05.

select the closest OSPL, on the wizard, to the one on device.

select 'Next' button. wait until wizard proceeds to final page. read and close window.

note. device must boot into Bootloader.

if Bootloader reads RSPLX.Y.Z and CotullaRSPL, then RSPL was successful.

continue to Step #30 or #38.

instructions to install HSPL​

if RSPL'd and HSPL is desired

make sure RSPL wizard is closed.

run DFT_HSPL..._INSTALL.exe

please, read information text. select 'Next' button.

device should already be RSPL'd and connected to PC, still.

select 'Next' button. wizard should detect your device.

select HSPL, then select 'Next' button. wait until wizard proceeds to final page.

read and close window, then disconnect device from USB.

enter Bootloader on device, if it reads HSPLX.Y.Z and CotullaHSPL, then flash was successful.

instructions to install a Shipped or Custom ROM​

if a different OS is desired

download ROM of choice. Shipped ROMs are available, here.

extract RUU_Signed.nbh (if Shipped ROM) or RUU_Unsigned.nbh (if Custom ROM).

note. flashing a RUU_Signed.nbh will also replace device's R/HSPL to OSPL of ROM.

bring device into Bootloader and connect to PC via USB.

flash extracted *.nbh using task29.

once flash successfully finishes, disconnect device from USB.

enjoy new ROM.

instructions to install a Radio​

if a different Radio is desired

download the Radio of choice, here.

extract the contents of the 7-zip.

boot device into Bootloader and connect to PC via USB.

flash RUU_Unsigned.nbh from 7-zip with task00.

after flash successfully finishes, disconnect device from USB.

enjoy new Radio.

note. if links are down, please let me know, will reupload.

disclaimer. i hold no responsiblity for one's actions and the result of one's device because of those actions.