Welcome to Octoplus/Octopus Box Samsung software version 1.4.3
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To connect GT-I9300 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->Developer options.
3. Turn on "USB Debugging" option.
4. When message is appear press "Yes".
5. Connect usb cable to phone.
6. Go to dial ********
7. Enter *#9090# number.
8. Set speed to 115200.
9. Reboot phone.
10. Press "Read Info" in software.
Selected firmware file: I9300XXUGMJ9_I9300OXAGMJ9
_I9300XXUGMJ9_HOME.oct
Please switch your phone to the download mode and connect it to a
PC.
To put GT-I9300 phone into download mode you have to perform the
following steps:
1. Reconnect phone battery.
2. Press and hold "Volume - " + "Home" + "Power" buttons.
3. When phone turns on press "Volume+" button.
Found phone on
Firmware write started.
Writing BOOTLOADER section...
BOOTLOADER section has been written successfully.
Writing TZSW section...
TZSW section has been written successfully.
Writing BOOT section...
BOOT section has been written successfully.
Writing RECOVERY section...
RECOVERY section has been written successfully.
Writing SYSTEM section...
SYSTEM section has been written successfully.
Writing RADIO section...
RADIO section has been written successfully.
Writing CACHE section...
CACHE section has been written successfully.
Writing HIDDEN section...
HIDDEN section has been written successfully.
Firmware writing successfully completed.