[Desire HD Android Development] gkrananth:
The following one i have seen one of the Chinese forum. Is it can possible to root 2.37. I need a help from expert. THanx.

PS: Citie copyright Andrews forum all milk @ coffee produced reproduced thank you, please indicate the source

Note: This downgrade tutorial is only suitable for DHD in SHIP S-ON or ENG S-OFF under the wrong brush 1.72 above the official RUU version of the software, from ENG S-OFF back SHIP S-ON and can not by Visionary + software get ROOT highest authority use, other circumstances do not try!

Preparation:

1, download and install the HTC Sync Download: http://www.htc.com/cn/SupportViewNews.aspx?dl_id=982&news_id=776

2, download adb-tool.zip

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Will extract from the adb-tool folder to the C root directory, then copy the adb-tool folder three files into the "My Computer "----" C drive "---- "Windows "----" System32" directory.

3, download Downgrade.zip

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Will extract from the five files to the C drive just copied into the adb-tool folder

4, corresponding to your mobile phone to download the official region Brush Pack (RUU beginning of the EXE file, version 1.32 and below, there are 1.31 to 1.31 recommended)

1) See CID: DHD in "Settings "----" "----" application development "----" USB debugging" tick, and then DHD computer with data cable to connect, connection options "charging only", open the computer's "Start "----" Run", type "cmd", the pop-up window, enter "adb shell getprop ro.cid", then Enter

Appears similar to the "HTC_621" code words HTC_621 behalf of the Taiwan version HTC_622 DHD DHD is representative of the Hong Kong version (and so on ... specific code can be Baidu, if you can not find customer service customer service consulting HTC official website: http:// www.htc.com / CN / Support / online_service.html )

2) find the DHD and the corresponding area of your official Brush Pack, and version 1.32 and paste the following official RUU Collection Address: http://www.anzhuo.cn/thread-15122-1-1.html more official RUU Collection stickers Address: http://xdafil.es/index.php?sort=date&path=DesireHD/RUU/

The Hong Kong version, for example: RUU_Ace_HKCSL_CHT_1.32.832.6_Radio_12.28b.60.140e_26.03.02.26_M_release_155943_signed.exe

RUU: HTC Update Utility abbreviation official upgrade tool

Ace: DHD's internal development code

HKCSL: HK on behalf of Hong Kong, CSL is the largest one mobile network operators, like China Mobile (HTCCN: CN on behalf of China)

CHT: language is Traditional Chinese, Simplified Chinese corresponds to CHS, US behalf of the U.S. (CHS for Simplified Chinese, WWE on behalf of the world's Edition)

1.32.832.6: software version number

12.28b.60.140e_26.03.02.26_M: radio version number

Release: release means here that the final version, along with the corresponding test, a test version of the meaning of

155 943: the version number part of the Signed: Signed through

5, the download is complete run the official Brush Pack, wait until you can brush machine interface operation, do not click Next, and then the computer

To Win7, for example: C: \ Users \ Administrator \ AppData \ Local \ Temp (If you do not find the corresponding folder, click Show hidden folder, if found

To xp, for example: C: \ Documents and Settings \ Administrator \ Local Settings \ Temp rom.zip, please use the search function in the computer's Temp directory search)

Directory, there is similar to {BC47B5B7-0CDF-4C97-9A2A-5C6C8E36186A} folder, inside there's a certain rom.zip archive, this archive copy out and rename it PD98IMG.zip, and then into the DHD mobile phone memory card root directory

Started:

1, DHD in "Settings "----" "----" application development "----" USB debugging" tick, and then DHD computer with data cable to connect, connection options "only charge "

2, open the computer's "Start "----" Run", type "cmd", the pop-up window, enter "cd \", Enter, then type "cd \ adb-tool", then Enter

Then another input (note the space):

1) "adb push psneuter / data / local / tmp", carriage return (the psneuter files to the phone / data / local / tmp directory)

2) "adb push misc_version / data / local / tmp", carriage return (the misc_version files to the phone / data / local / tmp directory)

3) "adb shell chmod 777 / data / local / tmp / psneuter", enter (modify file attributes psneuter 777)

4) "adb shell chmod 777 / data / local / tmp / misc_version", enter (modify file attributes misc_version 777)

5) "adb shell / data / local / tmp / psneuter", carriage return (Executive psneuter file)

6) "adb shell", carriage return (return adb shell)

Completion of 6), you should see the command prompt window "#" symbol, if not, check whether the correct implementation of the above steps if there is "#" symbol

Then enter:

7) "/ data / local / tmp / misc_version-s 1.31.405.3", carriage return (the role of this step is to make your system from that under the current software version is 1.31.405.3, automatic upgrades for the back to prepare)

8) "exit", Enter

9) "adb reboot bootloader", Enter

At this point the phone will automatically restart, and then automatically detect the presence of PD98IMG.zip, then automatically upgrade is complete, you will downgrade your phone to find that your own version of the official RUU

Downgrade to this end, you have complete the downgrade, so now you can re-post in accordance with Brush tutorial from scratch http://www.anzhuo.cn/thread-21957-1-1.html

Finally, I wish you success Brush