
L1
Service
Manual
TCL
Communication Ltd.
Rev.
5051A/J/M/X/D/T Level 1 Service Manual
Page
1.1
30/33
All rights reserved. Transfer, copy, use or communication of this file is prohibited without authorization.
b. Power off the device, press volume up +volume down key in the same time, then insert the USB cable to
start upgrade process.
For Sugar upgrade during the power off status, please go on proceed with the normal process.
I.
Login the Sugar QCT_SP, then select the 5051 model: