5G Module Series
RG500L_EVB_User_Guide 35 / 38
The following figure shows the COM Port Setting of QCOM: select the correct “COM Port” (USB AT Port,
i.e., MediaTek ELT Port (COM 6) or MediaTek ETS Port (COM 7) as shown in the figure above) and set
the correct “Baudrate” (e.g., 115200 bps). For more details about QCOM usage and configuration, see
document [2].
Figure 27: COM Port Setting Field on QCOM (USB AT Port Connection)
4.3. Firmware Upgrade
Firmware of the module is upgraded via USB port by default, and there are two methods for the upgrade:
emergency download and normal download. Please refer to the following procedures to upgrade firmware
through the EVB.
Before firmware upgrade, please ensure that the firmware upgrade tool QFlash is available on PC.
4.3.1. Emergency Download
1. Connect the EVB with the PC through USB Type-C cable.
2. Turn the USB_BOOT switch (S1205) to HIGH.
3. Insert the DC power adapter and turn the power switch (S0203) to ON.
4. Upgrade the firmware with QFlash. See document [3] for details about the use of QFlash.
4.3.2. Normal Download
1. Connect the EVB with the PC through USB Type-C cable.
2. Insert the DC power adapter and turn the power switch (S0203) to ON.
3. Wait for the USB port to be found in Device Management of the PC.
4. Upgrade the firmware with QFlash. See document [3] for details about the use of QFlash.
Figure 28: USB Port Loaded on PC Device Management
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