Download Text - ETH E-Collection

4.1. Samsung GT-B3740 USB LTE Stick
managed to solder two wires without breaking the possibility to attach the
acquired cable to the connector. The result is shown in Figure 4.4.
VDD_1.8V VBUS_5.0V
VDD_1.8V
R400
HDC401
2
4
6
8
10
12
2
4
6
8
CMC_TDO
RESET_IN
10
12
UART0_TX
D404
R402
1
1005
9
11
1
3
5
7
9
11
LXES15AAA1-075
7
3
5
13 NC
14 NC
15 NC
16 NC
CMC_TRSTN
CMC_TDI
CMC_TMS
CMC_TCK
UART0_RX
Figure 4.3: Schematics of the JTAG connector used on the Samsung LTE USB stick GT-B3740
Source: P1 Security [15]
Figure 4.4: Soldered wires to UART pins on the JTAG connector of the Samsung LTE USB
stick GT-B3740
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