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Flashing Cisco Meraki MR18 with OpenWRT firmware ?

I had this question after viewing Using Cisco Meraki for home use after the license expired ?.

Hi All,

Can anyone here please explain to me what does the below steps means:

UART adapter wired to the MR18 (speed is 115200). Pinout (left to right): VCC/RX/TX/GND ?

Because behind the Meraki MR 18 I can only see power port and also the Gigabit Ethernet port. no COM or serial nor USB port.

How to back up the Official firmware before overwriting it with the OpenWRT ?

Thanks in advance.
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Senior IT System Engineer
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Senior IT System Engineer
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3 Solutions
 
masnrockCommented:
You have to open up the MR18 to get to the board that you can connect the UART adapter to. When you're looking at the board, you will see the areas you need to connect to.
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Craig BeckCommented:
The UART port is inside the case, toward the top-right if you're looking at the board.  Obviously, this means you have to open it up.
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Senior IT System EngineerIT ProfessionalAuthor Commented:
@Craig: does this means that I can use any USB drive to load the firmware to the USB port within the Meraki MR18 device ?
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masnrockCommented:
You have to connect the USB port to a PC or laptop. Then you would use a program like PuTTY to communicate with the Meraki using the settings mentioned.
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Senior IT System EngineerIT ProfessionalAuthor Commented:
Thank you !
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