1. Choose correct flash file(s).Check flashing options if needed
(Re-partition, EFS clear, Boot update)
2. Power on phone in download mode (turn off phone, hold Volume Down +
Home(Central) Button + Power.)
3. Connect phone to PC, install drivers if needed.
4. Press ‘Flash’ button.

Operation: Flash
Selected model: GT-I9070
Software version: 25.5

File analysis… OK
Total file size: 0x32DFC7C2 (813 Mb)
Searching USB Flash Interface… detected COM5
Setup connection… OK
Reading PIT from phone… OK
Sending STE_boot.bin.md5… error timeout

Done with Samsung Tool PRO v.25.5