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The default Android was a vodafone branded 2.2. HTC Desire HD sold after December 2010 probably contains the ROM version 1.72.405.3.

  • Currently there are no wholes to gain root from here, so first step is a downgrade to the 1.32 ROM.
  • I started using these instructions.
    • For this the android sdk is to be installed, providing the 'adb' binary for communication with the phone
  • The old ROM is then placed on the SD-card. Starting the downgrade failed; a checksum was found to be incorrect by the updater.
    • To remedy a 'golden card' had to be created
    • For this the SD-cards serial number is read out. A command like 'adb shell cat /sys/class/mmc_host/mmc1/mmc1:*/cid' is to be used. Yet this didnt bring up anything useful on the HTC desire HD, but it did for my HTC desire. The SD-card inside the HTC desire was prepared to be used as 'golden card' and the downgrade performed with that card.
    • This serial numbers order is reversed
    • This reversed number is then embedded into a bootsector, there are websited doing this
    • The sector is written onto the already partitioned SD-card, after having the mobile offering the SD-card as storage: 'cat goldendisc.img >/dev/sdb' - if the mobiles SD-card appears as /dev/sdb.
    • With this the downgrade succeeds
  • Then a recovery software can be installed like ClockworkMod
  • And custom android versions can be used

android 4

hardwarerelated/htc_desire_hd.txt ยท Last modified: 2018/06/10 02:13 by chris