Repairing bricked HTC SensationXL (PI39200) is easy using RIFF Box. Phone is auto powered on with USB Data Cable connected to the PC while battery is connected. Some (or all) revisions of HTC SensationXL boards have JTAG interface disabled (that is enable MARM JTAG Fuse is blown in the MSM8255 chip). In this case the JTAG may be enabled only by firmware itself. This is done by the FSBL loader, so writing to FSBL area is artificially disabled in the DCC Loader code. DCC Loader will discard all flashing attempts into FSBL zone and will respond with success code as if flashing succeeded. In this way FSBL zone is protected while user still can flash full image files seamlessly. Resurrector will reflash radio’s boot zone (except FSBL area) and will re-write PDA’s SPL to 1.25.0004 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 = ‘PG3920000’. There is option to reflash BOOT and RECOVERY zones. Please note, if your phone has the FSBL loader damaged and MCU has JTAG FUSE blown then there is no way to resurrect your phone via JTAG interface.
To resurrect HTC SensationXL:
Solder JTAG cable to HTC SensationXL JTAG pads;
Insert battery and connect USB Data cable;
Make sure HTC SensationXL is selected in the list of models;
If you use only 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.
RIFF JTAG – Samsung GT-P6810 Galaxy Tab 7.7 WiFi 16GB Unbrick – Dead Boot repair supported, World First ! ! !
[b]Repairing bricked [b]Samsung GT-P6810 Galaxy Tab 7.7 WiFi 16GB is easy with RIFF Box. Samsung P6810 is based on the Exynos Processor (Cortex-A9 Dual-Core). JTAG pads are very small; professional experience in soldering is required to connect wires to the JTAG interface. Note, one simple way to connect over JTAG – connect USB cable to PC and insert battery. In this case phone is automatically powered on.
To resurrect Samsung P6810:
Solder JTAG cable to Samsung P6810 JTAG pads;
Connect USB cable to phone and PC;
Insert battery;
Make sure Samsung P6810 is selected in the list of models;
Make sure a fixed TCK frequency is selected;
Click Resurrect button;
Wait till software signals a successful operation completion;
Disconnect USB cable, 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 original Samsung downloader software to restore it to the working state.
To enter download mode:
Disconnect PC cable;
Insert battery;
Hold both ‘Volume Down’ and ‘Home’ keys and press Power-On.
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Subject: 21.03.2012 RIFF JTAG Box - Samsung P6810, HTC Sensation XL Supported and more ! 
Wed Mar 21, 2012 3:37 pm
