Unitech MS852B Plus User Manual

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- 14 - © 2020 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS852B Plus User’s ManualHow to update the scanner firmwareNote: Before going to update the scanner firmware, please un-pairyour scanner with the cradle first.1. Switch Cradle interface to the USB serial interface (away from RJ45 port),2. Connect the cradle to the computer and wait till LED flashing blue color and thenopen the Tera Term and select the Com port to establish the connection.3. No need to power on the scanner and insert into the cradle.4. Press down” Spacebar” on the computer first while press down the scanner triggerkey You will hear a Bi sound means scanner enters into the bootloader mode(scanner flashing white LED)5. The Tera Term screen pops out of ccccc of strings.6. Select from Tera term menu: Transfer Y modem- Send7. Select the firmware to be updated to the scanner -> Confirm to perform the update8. The screen pops out of words and you will hear a Bi sound  wait till white LEDturn off Success