Tag Archives: Pbl

RIFF JTAG – Samsung I9100 Galaxy S II Unbrick – Boot repair supported, World First ! ! !

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29.07.2011     Samsung I9100 Galaxy S II Unbrick – Boot repair supported, World First ! ! !

Samsung I9100 is based on the S5PV310 (Exynos 4210) Processor (Cortex-A9 Dual-Core).

JTAG pads are very small; professional experience in soldering is required to connect wires to the JTAG interface. There is a big variety of versions of Galaxy II devices: GT-I9100, GT-I9100G, GT-I9100L, GT-I9100M, GT-I9100T, GT-I9101, GT-I9103, GT-I9108, GT-I9188, and maybe more. Some of them are based on different hardware platform – the OMAP4430 (Cortex-A9 Dual-Core). Thus make sure first which exact hardware version you have on hands.
Note, one simple way to connect over JTAG – connect USB cable to PC and insert battery. In this case phone is automatically powered on.
Phone has such booting sequence: ROM → FBL → IBL → PBL → SBL. Current resurrector will resurrect Partition Table (PIT) and SBL zones which are located in the iNAND (eMMC) memory. Write access to memory which contains FBL, IBL and PBL loaders is not supported currently, but in case your phone has these loaders damaged, you can choose “Initiate Download Mode” way of resurrection in order to directly put the phone into the Download Mode.

To resurrect Samsung I9100:

  •  Solder JTAG cable to Samsung I9100 JTAG pads;
  •  Connect USB cable to phone and PC;
  •  Insert battery;
  •  Make sure Samsung I9100 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.
Please click “Check For Updates” button in order to download and apply new files. Closing all running application before starting update process is recommended.