Tag Archives: Connection Establishment

RIFF JTAG – Samsung SCH-i920 Omnia II 8GB Unbrick – Dead Boot repair supported

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RIFF JTAG – Samsung SCH-i920 Omnia II 8GB Unbrick – Dead Boot repair supported

Repairing bricked Samsung I920 AP (PDA Part) is easy with RIFF Box. Due to some hardware pecularities, we recommend to use only battery without USB cable connected. Please note, during connection establishment phase you will have to press the Power On key twice.

To resurrect Samsung I920 AP:

  •  Solder JTAG cable to Samsung I920 AP JTAG pads;
  •  Make sure Samsung I920 AP is selected in the list of models;
  •  Insert battery; make sure no USB cable or charger is connected;
  •  Press the Power On key;
  •  Click Resurrect button;
  •  When it stops at “Establish communication with the phone…” press the Power On key again;
  •  Wait till software signals a successful operation completion;
  •  Disconnect USB cable, de-solder JTAG wires;

To resurrect Samsung I920 CP:

  •  Solder JTAG cable to Samsung I920 CP JTAG pads;
  •  Make sure Samsung I920 CP is selected in the list of models;
  •  Insert battery and connect USB cable or charger;
  •  Wait till AP part boots up completely;
  •  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 known flashing methods.
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RIFF JTAG – RIFF JTAG Manager v1.28, RIFF Box firmware v1.20 released

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14.03.2011  RIFF JTAG Manager v1.28, RIFF Box firmware v1.20 released

Whats new :

Firmware 1.20

  • Optimised connection to the PXA270 core
  • Added DCC TX channel (host-to-debugger) cleanup (flushing) feature (happens now during DCC Read with 0 timeout parameter) for Cortex-A8
  • Optimized Cortex-A8 connection establishment after coming out of reset (after NRST signal assertion)
  • Added emergency script processing for Cortex-A8 core (h/w script which is executed immediately after core was halted)

JTAG Manager 1.28

  • Added RAM selft-test right before uploading DCC loader.
  • Added functionality to handle complex memory devices (like MDOC H3) with lengths not necessary to be alighned to MBs;
  • Added DCC TX channel flushing command before starting DCC Loader – thus it is guaranteed that next first DCC read will get DCC Loader’s packet and not some residual trash data.
  • Added 1GB and 2GB OneNAND chips to the size autodetection list.
  • Added progress indication during saving files which were read on the DCC Read/Write page

Please click “Check For Updates” button in order to download and apply new files. Closing all running application before starting update process is recommended.