I followed the instructions and installed Tomat on my Cisco E3200 router without issue. I chose Tomato by Shibby specifically because it supports the 5GHz radio in this particular router model. But woe and behold after I installed the settings were not there, I could only see them for the 2.4GHz WiFi.
Well it turns out instructions are made to be followed, I got curious after install and logged right in, but it turns out you really have to do the last 30-30-30 reset.
Sure enough after the final 30-30-30 hard reset the settings for the 5GHz of my Cisco 3200 appeared and were functional.