Download C2900-universalk9-mz.spa.157-3.m8.bin | - [exclusive]

If you're planning an upgrade, I can help you with the for the transfer or check the minimum DRAM/Flash requirements for your specific router model. Would you like to see those? Cross Platform Release Notes for Cisco IOS Release 15.7(3)M

It will not work on the 2800 series (requires c2800 images) or the 1900 series.

In this post, we cover where to find this file, what you need to know before installing it, and a quick installation guide.