Firstly, you should define what "unable to restore" means. For example, if your computer were turned off, you would be unable to restore anything. Is this the case?
Secondly, there was no "DB2 9 version" on LUW. Is it 9.1, 9.5, 9.7, or 9.8 that you are referring to?
Upgrade to DB2 10.5 is possible from DB2 9.7 and up on Linux and Unix, and from 10.1 on Windows.
Another thing to note is that the backup file you've shown appears to be only one of the set of at least two, as indicated by the .002
extension. I'd expect there to be also the file named MYDBASE.0.DB2.NODE0000.CATN0000.20120706000435.001
.