i had mikrotik 2.8.26 , and wanted to update to 2.9rc6 , i downloaded all packages of 2.9rc6 from http://www.mikrotik.com , i put the files on another MT router through ftp , and from the 2.8.26 router i downloaded the packages and rebooted the router , the router updated , but lost the license key , now i can't downgrade..
does anybody know the way how to update and keep the license ???