23.05.2012 RIFF JTAG – HTC 7 Surround T8788 (HTC Mondrian) Unbrick, Unlock, Supe

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Repairing
bricked HTC Surround (PD26100) is easy with the RIFF Box. Phone is auto
powered on with USB Data Cable connected to the PC while battery is
connected.
In case you have no USB cable near, make sure battery is charged enough
and hold Power On button during initiation of JTAG connection.
Resurrector will reflash radio’s boot zone and will re-write PDA’s SPL
to 0.74.1000 version. Additionally to SPL and Radio zones, the zone
which contains Model ID is re-flashed too. Thus after resurrection phone
will have Model ID = ‘PD26*****’.
To resurrect HTC Surround (PD26100):

Solder JTAG cable to HTC Surround JTAG pads;
Insert USB Data cable into board and PC;
Make sure HTC Surround (PD26100) is selected in the list of models;
If you use battery, press Power On key;
Click Resurrect button;
Wait till software signals a successful operation completion;
Disconnect power supply, de-solder JTAG wires;

Now
phone is in bootable condition, that is, even if it does not start up
normally, you can flash it using known flashing methods.
To enter download mode:

Disconnect PC cable;
Insert battery;
Hold ‘Volume Down’ key and press ‘Power ON’ button.

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