Hello, I got an RB 951-2n and yesterday it was the first time i use it. I found a paper on the box to upgrade it, i downloaded v6.1 upgrade package then i opened the webfig v5.2 page and uploaded the file, after booting the router didn’t work and the ACT LED was lightning continuously. I tried to reset it many times from front panel with not avail, then i read some topics here talking about Netinstall so i downloaded it and installed v6.1 then v5.25 with not avail also, then installed v5.22 also didn’t work but the ACT LED stopped lightning continuously and RB didn’t appear in the Netinstall app.
Now i don’t know what to do and i feel that i lost my money 
. Any help here?
I downloaded v5.22 by Netinstall and it works fine now, shall i stay on that version? it didn’t work neither on v6.1 nor v5.25