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L1
Service
Manual
TCL
Communication Ltd.
Rev.
5051A/J/M/X/D/T Level 1 Service Manual
Page
1.1
29/33
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3.3 SW download process
Note:
Sugar upgrade during the power on status.
a. The upgrade Diag is disabling by default, press
“###2324 #” in dial screen to enable the Diag com (do
not need to enable other options) to make sure the COM Port can be detective by PC.
The Diag will disable when upgrade finished.