On the 23rd I asked you to give some commands and write the result on the forum, but you didn’t care.
http://forum.mikrotik.com/t/protected-routerboot/85672/1
I managed to find a RouterBOARD 3011UiAS and checked it out. It has an ipq8060 chipset and the factory-firmware version is not upgradeable also with 7.6 .dpk
So use netinstall64 7.16.2 to install whatever version of RouterOS you want to put on it
and don’t expect anything more from obsolete hardware (newsletter 2015) that is at least 10 years old than newer software, which in computing is an abyss.
http://forum.mikrotik.com/t/newsletter-69/93878/1
I still have these models in production that work fine with 6.48.7.
What is the reason to replace something that works for sure with something that maybe works?
Especially with RouterOS newer than 7.16.2…