Due to high demand expect some shipping delays at this time, orders may not ship for 3-4 business days. On MLK Day no orders will be shipped.

Firmware for SIM800H
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Firmware for SIM800H

by vaaalbara on Wed Nov 17, 2021 10:49 am

Hello all. When I try to run a SSL related AT command on my SIM800H Adafruit board I get an error (I am using PuTTY to pass these commands, I turn on the board, then run AT+SSLOPT=1,1 and get ERROR back).

I have heard that the SIM800H's ability to use SSL depends on the firmware that is on the board. Currently, my device is on R13.08. I have the USB cables to connect it to my PC, and the firmware update tool. However, I cannot find more firmware files - it seems that simcoms website is no longer being available.

Can anyone point me in the direction of some firmware that will enable the SSL abilities of the SIM800H?


Posts: 1
Joined: Tue Sep 21, 2021 8:31 am

Re: Firmware for SIM800H

by rskup on Wed Nov 17, 2021 1:51 pm

If you mean the simcom.ee site, I ran into the same issue a couple days ago and nearly passed out. I rely on it quite a bit for various manuals/guides/etc... for my boards. I've never updated firmware though, is that the *.rar files I'm seeing?

Anyways, you can (sorta) get back to simcom.ee with the archive.org link below:

https://web.archive.org/web/20210708091 ... ents/?dir=

I've found sometimes I need to change the date of when the archive was made to get what I want, but so far no problems.

Posts: 98
Joined: Sat Aug 01, 2020 9:04 pm

Please be positive and constructive with your questions and comments.