Upgrade from 10.1-RC3 to 10.1-RELEASE using freebsd-update

[Masoom Shaikh]

I installed 10.1-RC3 via USB image on my laptop, in bid to upgrade 10.1-RELEASE I ran
#freebsd-update fetch -r 10.1-RELEASE
it fails saying
Looking up update.FreeBSD.org mirrors... 5 mirrors found.
Fetching metadata signature for 10.1-RC3 from update5.freebsd.org... done.
Fetching metadata index... fetch: http://update5.freebsd.org/10.1-RC3/amd64/t/c8fafcc79d7cc092c7782f4f1a29a777d751294183c8f2cb9daf940ba0525d96: Not Found
failed.

this topic has already been discussed here
https://lists.freebsd.org/pipermail/freebsd-stable/2014-November/080954.html and

https://forums.freebsd.org/threads/freebsd-update-r-10-1-rc4-upgrade-fails.48835/


solution is actually mentioned in forums threads
what it suggest is 
#freebsd-update rollback
#reboot
#freebsd-update fetch
#freebsd-update upgrade -r 10.1-RC4
#freebsd-upgrade install
#reboot
#freebsd-upgrade install

for me rollback fails saying
No rollback directory found.
maybe because I did not install RC3 via freebsd-update, nonetheless any fix as yet?