Users Manual

TPM541 series
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Cat-M1/NB Module
Now, all the necessary firmware images are installed well in your PC/Laptop.
8.2. Environment setup
Local upgrade is flashed the firmware through local UART_2 port.
Please follow this instruction step by step to setup your environment for upgrade.
8.2.1. Open your UART_0 with terminal tools.
a. Turn on EVK
b. Connect UART_0 to PC via USB cable.
c. Setup Terminal tools, please refer figure 7.2.1. COM port: com port will be enumerated on
Windows device manager
d. Setting Baud rate for UART0: default is 115200.
Figure 7.2.1 for putty setting
8.2.2. Setup BootDelay time to 10s
Before we start to upgrade firmware, TPM541 need to be configured the boot delay time to 10s by
sending AT%SETBDELAY=10 through AT port(UART_0) to make sure Image Burn Tool has enough
time to put TPM541 into UBOOT mode for firmware upgrade.
8.2.3. Connect UART_2 to PC
UART_2 is also used to upgrade TPM541 firmware, be sure UART_2 is connected well with USB cable
between PC and EVK.
8.2.4. Enter U-BOOT mode
a. TPM541 series firmware upgrade need to be executed under u-boot mode. So user shall login
UART2 to interrupt boot-up procedure and force TPM541 into u-boot mode for flashing image.
After reboot the modem, the modem boot delay will be 10sec. Please process the steps as
below.