Type 1 Brick

Plug your microsd card to your linux computer

Run the following commands and replace YOURMICROSD with your microsd’s mountpoint (you can view it with gparted)

$ cd sdcard

$ ./create_recovery_sdcard.py -o recovery_sdcard.bin -s sboot.bin

$ dd if=recovery_sdcard.bin of=YOURMICROSD

$ sync

Now we have to enter download mode:

1. Insert the SD card to your device, insert the battery, press power+volume down+home buttons for approx. 2-3 seconds, release all of them and press the volume up button once. You might see some funky stuff on the phone's screen -- just ignore it.

2. Connect the usb cable.

3. Run the following command in order to low-level format the eMMC and install the new firmware: exploit/sboot_exploit.py --shellcode shellcode/write_fw.bin -e 0xf7bugfree.bin

4. Boot again to download mode and connect the usb cable.

5. Resize the boot partition: exploit/sboot_exploit.py --shellcode shellcode/change_boot_partition_size.bin

6. Creating the recovery sd card

1. Insert SD card (Everything from it will be wiped!)
2. Perform on the directory of this file: GT_I9300_unbrick_sdcard_head.bin dd if=GT_I9300_unbrick_sdcard_head.bin of=/dev/path to SD card device (mountpoint on gparted)

eMMC is functional! You can use Odin to flash the ROM from the .tar.md5 that you downloaded to your device (you also need to repartition, i.e. flash a new PIT). Afterwards, flash TWRP and format these partitions to ext4 (/cache, /data, /preload, /sdcard, /efs). Then flash some firmware and your phone is good to go (except for EFS which is missing now).