Olá, desculpe pelos links...
Fiz o seguinte procedimento abaixo para habilitar o DOWNLOAD MODE (volume baixo, home, power), pois no meu aparelho importado (t-mobile) não vem habilitado de fabrica.
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Preparations: Make sure you have the drivers installed (i.e Kies is recognizing the phone), adb available and "USB Debugging" turned on in "Settings -> Applications -> Development" menu. Type *#0228# in the dialer and check Voltage value (without USB plugged in) is atleast 3800(mV).
1. Unplug the phone from the computer (if connected)
2. Kill all Kies related software (tray agent, etc)
3. Start Odin3 v1.3 Downloader
4. Plug in the phone to the computer
5. Start a new command prompt and navigate to the folder / drive where adb is located.
6. Type "adb reboot download" to the command prompt and press enter.
7. Move to Odin3 v1.3 downloader and select the "Aries_P-SBL.tar.md5" as PDA file. Make sure "Phone Bootloader Update" is ticked and re-partition is unticked. Do not select any other files but "Aries_P-SBL.tar.md5".
8. Press "Start" button to launch the update process. It will take around three seconds to complete. After the update phone will reboot automatically.
Download: GT-I9000_P-SBL_RCVDL_FIX_ODIN.7z
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Resumindo:
Meu aparelho nao tem MODO DOWNLOAD e não sei como corrigir esse problema de Boot.
Se alguem puder ajudar eu agradeço MUITO!!