I do not have a null serial cable on hand, so I decided to do the upgrade using winbox with the file option, this did not worked and it was very slow on the process of reading the actual files. Then doing the drag and drop did not do anything, and i got disconected several times.
So i decided to do it with filezila by ftp. it did the upgrade but now i cannot login into the browser configuration, and the winbox does not work. I can see the upgrade was done accesing by ftp, but the router 133 reboots every 4 minutes.
Somebody has gone on this procees before?
I will apreciate your help, because many hour have I been working on this and nothing.