# Cannot Access Rugged SOM at 192.168.2.1 When Paired with SwitchBlox Rugged

**URL:** <https://forum.botblox.org/t/cannot-access-rugged-som-at-192-168-2-1-when-paired-with-switchblox-rugged/586>\
**Category:** BotBlox Hardware\
**Tags:** switchblox-rugged, rugged-som\
**Created:** [June 10, 2026, 1:46pm UTC](https://forum.botblox.org/t/cannot-access-rugged-som-at-192-168-2-1-when-paired-with-switchblox-rugged/586 "2026-06-10T13:46:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ElsieMichaelson](https://avatars.discourse-cdn.com/v4/letter/e/b5ac83/32.png) [@ElsieMichaelson](https://forum.botblox.org/u/ElsieMichaelson)\
**Post date:** [June 10, 2026, 1:46pm UTC](https://forum.botblox.org/t/cannot-access-rugged-som-at-192-168-2-1-when-paired-with-switchblox-rugged/586/1 "2026-06-10T13:46:10Z")

</div>

_This topic was migrated from the BotBlox ticketing system after being summarized and anonymized._

Question:

I have the layer 3 router and the rugged SOM paired. I have the connector pin placed (right justified) and can see power appropriately blink on both sides. I just can’t access the wrt homepage. I’m guessing this is a dip switch issue pointing to something that it shouldn’t be. I’ve verified that I can ping other devices on the 192.168.2.X/24 subnet through the rugged… Can’t ping 192.168.2.1. Thoughts?

Answer:

The issue is due to a contention between firmware that runs with SwitchBlox Rugged, and the management software on Rugged SOM.

SwitchBlox Rugged runs firmware that configures the chip in an unmanaged state; however when paired with Rugged SOM, the firmware on SwitchBlox Rugged “fights” with Rugged SOM, leading to what you see.

Ultimately this issue arose from the fact that SwitchBlox Rugged was developed first, and Rugged SOM is a later addon that is only now seeing adoption.

The solution is easy but it requires SwitchBlox Rugged to be flashed with empty firmware. If you have the hardware listed in the forum post below, you can do this yourself.

> [@How do I flash BotBlox boards with firmware?](https://forum.botblox.org/t/how-do-i-flash-botblox-boards-with-firmware/244):
>
> Flashing Boards with ST-Link V2 Hardware requirements A compatible BotBlox board (not all our boards can accept firmware) [ST-Link V2](https://www.adafruit.com/product/2548)[Segger 6 pin pogo pin cable](https://www.tag-connect.com/product/tc2030-idc-nl)[Segger pin retaining rubber (optional)](https://www.tag-connect.com/product/grip-6-3-pack) Female to male jumper (dupont) cables A PC with STM32 [ST-Link Utility](https://www.st.com/en/development-tools/stsw-link004.html) installed Steps Connect the ST Link V2 to the pogo pin 6 pin header. The photo below shows the pins to connect to on the pogo pin header. The corresponding pins on the ST-Link V2 are labelled on the device. Use any jumper cabl…

If not, we can arrange SwitchBlox Rugged units with empty firmware to be shipped to you, and you can return your units to us.

(TS2604-0160)