Where can I download the latest MI424WR Rev I firmware to my computer to update my router?

[#1]

If you want to check what you have:

Log In to your Router

Click on System Monitoring

On Router Status Screen you will find

Firmware Version plus other info that might be of interest to you. 

PS from Actiontec Admin

June 22, 2017 09:47 (Edited 2 years ago)

Unfortunately the contract that we have with Verizon does not allow us to post any firmware for the devices that we have manufactured for them. They do this so that they know every device on their network has the correct firmware. So we would have to direct you back to Verizon to obtain the firmware upgrade.

[#2]

That is correct, usually any service provider supplied router (as with cell phones) will get their firmware updates directly from the provider.  Cable Modems/Gateways (3rd party or not) are the same way.

[#3]

Here’s something that might be of interest.

http://opensource.actiontec.com/mi424wri.html