Hi @marjan.tech,
There are another way to upgrade module, that is using XMODEM file. Did your distributor send you XMODEM file?
a, If no, please contact your distributor again?
b, If yes, you can upgrade module following below steps:
Step 1: Extract file XMODEM. In this folder, you can see HL7800_4.5.4.0_to_4.6.8.0_allBin_nbIOT11_sig11.ua file.
Step 2: Click the right mouse > Properties > Focus value of Size:
Step 3: On AT port, sending command: at+wdsd=<value of size you get at step 1>.
Step 4: On AT port, select File > Send > Transfer type: xmodem > File: Browse .ua file at step 1 (Please make sure your module is running FW 4.5.4.0) > Start.
Step 5: After URC +WDSI: 3 displays, send command AT+WDSR=4 to accept install FW.
Step 6: Waiting URC +WDSI: 14, +WDSI: 16 and +WDSI: 0 display, then check current FW version.
Besides that, I can see the issue on your attached picture. Why do your PC have 2 COM3 ports? Please check again. And you can change COM port number through Device Manager: Open Device Manager > Select COM port > Click right mouse > Select Properties > Select Port Settings tab > Select Advanced > Change COM port number. Then you can try to upgrade module by .exe file.
Thanks,