Switch from a USB 3.0 (blue) port to a USB 2.0 port , as many flashing tools struggle with the high-speed protocols of 3.0 ports. 3. Verify Connection Timing
Check your power supply. Insufficient voltage to the chip can cause "garbage" data to be sent back, which the computer misinterprets as 0x68 . 3. SSL/TLS Mismatches handshaking... error unexpected response 0x68
: Ensure the device has at least 30-50% charge; a low battery can cause the processor to "brown out" during the high-power handshake phase. Switch from a USB 3
The "handshake" is the initial communication between your PC and the phone's BootROM. Error 0x68 often means the signal is weak or interrupted. Use a high-quality, original USB cable and avoid using front-panel USB ports on desktop computers—plug directly into the motherboard ports at the back. Driver Conflicts Insufficient voltage to the chip can cause "garbage"
You might encounter this in a debug console while trying to flash firmware to a microcontroller, in a PLC (Programmable Logic Controller) communication log, or within a custom script controlling a serial device like a barcode scanner, modem, or payment terminal.