- 13 -
© 2020 unitech Electronics Co., Ltd. All rights reserved.
unitech is a registered trademark of unitech Electronics Co., Ltd.
MS851B User’s Manual
How to update the scanner firmware
Note: Before going to update the scanner firmware, please un-pair
your 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 then
open 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 trigger
key
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-
Send
7. Select the firmware to be updated to the scanner -> Confirm to perform the update
8. The screen pops out of words and you will hear a Bi sound
wait till white LED
turn off
Success
