Alcatel MK20X Repair Document page 8

TCL
L2 Repair Document
Communication Ltd.
3.select the correct SW related to device CU，E.P if GPS Tracker CU is MK20X-2AALEU0,
downloads the EU version SW in CSS web.
4. You have to set first COM port, it allows 15 ports upgrading simultaneously. So make sure
the device port is within the 15 ports. E.P the device port is 45, you can set the first port from
31 to 45.
5.You have to know the device port. The port comes out only for 3S，(make sure the device
is power off) Click "set all" and click "start ll"，then connect the device to PC.
Rev. Page
1.0 8/23
MK20
Level 2 Repair Document
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