SIM800L Failed - No Communication

Using Arduino Project Guidance
1

This is the first time I found, my SIM800L modules registering to the network, but AT commands not working.
I reset the module by pulling low the reset pin.Then I get below failed message from 115200 baud rate.

image

Still AT commands does not respond.I tried another same batch module.Still the same.How to get it work?

2

Flash the firmware.

3

Thanks.

I have this tool.

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image622×798 28.4 KB

But Don't know what firmware to use? Any link for the firmware?

4

Simcom?

5

There website does not work.Thats why every SIMcom users struggling...!!

6

Maybe they don't want to support cloned boards...

7

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