TCL RT2841 Series, Service Manual

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Test and Alignment Specification for RT2841 Series (v0.01).docx
Page 17 of 27

Then Upgrade Main SW , Copy Main SW “Update.img” into USB stick (pen drive) root path
，

Insert USB to TV USB port, long press the “MENU/STB” button of local keyboard , and then Power on TV by
AC, The light of IR will flicker, it means TV is updating SW.

After finish update SW, TV will reboot automatically and please remove the USB.
Appendix
⑵
“How to upgrade SW using USB”

Upgrade RT2841 main SW

Copy the “ Update.img ” into USB stick (pen drive) root path.

Please delete other xxx.img files from USB stick.

Plug USB stick to the TV.

Power on TV by AC, at the same time press “power on” key for 10s, TV will update SW automatically.

When reflashing is successful, TV should restart automatically (about 4min).
Note
⑥:
If “upgrade” was performed, a “Welcome Setup” menu should be displayed, otherwise new SW version
should be displayed into relevant Factory mode caption info or on bottom of “ Factory menu “
If the P mode is reflashing after upgrade and can not be closed, go to “
Factory menu
” and select ‘Sita P
mode’ to ON, restart TV. Then go to “ Factory menu ” again and select ‘Factory hotkey’ to OFF.
Appendix (3)“How to upgrade SW using USB and RCU”
Appendix (4) “How to upgrade FLASH SW by OAD”
（
not support now
）
Appendix
(5)
“How to change Project ID with RCU”

Enable Factory Key (See “section 2.0-Product Assembly”)

Process following subsequence IR codes to change project ID: +xxx (xxx: Project ID, ex: 001)

If it works, the TV will restart automatically.