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6 <title>Petter Reinholdtsen: Unlocking HTC Desire HD on Linux using unruu and fastboot
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15 <a href=
"http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen
</a>
23 <div class=
"title">Unlocking HTC Desire HD on Linux using unruu and fastboot
</div>
24 <div class=
"date"> 7th July
2016</div>
25 <div class=
"body"><p>Yesterday, I tried to unlock a HTC Desire HD phone, and it proved
26 to be a slight challenge. Here is the recipe if I ever need to do it
27 again. It all started by me wanting to try the recipe to set up
28 <a href=
"https://blog.torproject.org/blog/mission-impossible-hardening-android-security-and-privacy">an
29 hardened Android installation
</a> from the Tor project blog on a
30 device I had access to. It is a old mobile phone with a broken
31 microphone The initial idea had been to just
32 <a href=
"http://wiki.cyanogenmod.org/w/Install_CM_for_ace">install
33 CyanogenMod on it
</a>, but did not quite find time to start on it
34 until a few days ago.
</p>
36 <p>The unlock process is supposed to be simple: (
1) Boot into the boot
37 loader (press volume down and power at the same time), (
2) select
38 'fastboot' before (
3) connecting the device via USB to a Linux
39 machine, (
4) request the device identifier token by running 'fastboot
40 oem get_identifier_token', (
5) request the device unlocking key using
41 the
<a href=
"http://www.htcdev.com/bootloader/">HTC developer web
42 site
</a> and unlock the phone using the key file emailed to you.
</p>
44 <p>Unfortunately, this only work fi you have hboot version
2.00.0029
45 or newer, and the device I was working on had
2.00.0027. This
46 apparently can be easily fixed by downloading a Windows program and
47 running it on your Windows machine, if you accept the terms Microsoft
48 require you to accept to use Windows - which I do not. So I had to
49 come up with a different approach. I got a lot of help from AndyCap
50 on #nuug, and would not have been able to get this working without
53 <p>First I needed to extract the hboot firmware from
54 <a href=
"http://www.htcdev.com/ruu/PD9810000_Ace_Sense30_S_hboot_2.00.0029.exe">the
55 windows binary for HTC Desire HD
</a> downloaded as 'the RUU' from HTC.
56 For this there is is
<a href=
"https://github.com/kmdm/unruu/">a github
57 project named unruu
</a> using libunshield. The unshield tool did not
58 recognise the file format, but unruu worked and extracted rom.zip,
59 containing the new hboot firmware and a text file describing which
60 devices it would work for.
</p>
62 <p>Next, I needed to get the new firmware into the device. For this I
63 followed some instructions
64 <a href=
"http://www.htc1guru.com/2013/09/new-ruu-zips-posted/">available
65 from HTC1Guru.com
</a>, and ran these commands as root on a Linux
66 machine with Debian testing:
</p>
70 fastboot oem rebootRUU
71 fastboot flash zip rom.zip
72 fastboot flash zip rom.zip
76 <p>The flash command apparently need to be done twice to take effect,
77 as the first is just preparations and the second one do the flashing.
78 The adb command is just to get to the boot loader menu, so turning the
79 device on while holding volume down and the power button should work
82 <p>With the new hboot version in place I could start following the
83 instructions on the HTC developer web site. I got the device token
87 fastboot oem get_identifier_token
2>&
1 | sed 's/(bootloader) //'
90 <p>And once I got the unlock code via email, I could use it like
94 fastboot flash unlocktoken Unlock_code.bin
97 <p>And with that final step in place, the phone was unlocked and I
98 could start stuffing the software of my own choosing into the device.
99 So far I only inserted a replacement recovery image to wipe the phone
100 before I start. We will see what happen next. Perhaps I should
101 install
<a href=
"https://www.debian.org/">Debian
</a> on it. :)
</p>
104 <div class=
"tags">Tags:
<a href=
"http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/debian">debian
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/english">english
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett
</a>,
<a href=
"http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet
</a>.
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457 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (
4)
</a></li>
459 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (
5)
</a></li>
461 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/standard">standard (
49)
</a></li>
463 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (
5)
</a></li>
465 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (
10)
</a></li>
467 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (
43)
</a></li>
469 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (
2)
</a></li>
471 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/usenix">usenix (
2)
</a></li>
473 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/valg">valg (
8)
</a></li>
475 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/video">video (
59)
</a></li>
477 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (
4)
</a></li>
479 <li><a href=
"http://people.skolelinux.org/pere/blog/tags/web">web (
38)
</a></li>
485 <p style=
"text-align: right">
486 Created by
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