Restore xxxxx.backup database

Help needed to restore a backup database!

1. Postgres service was started. When I run a restore command for the
backup stored in /tmp (backed from another server working on this
database and sent to meby email by another user). I created a database
by the same name "royapuram" by using createdb in template1 and then ran
the following command:

[root(at)adccs ~]# /usr/bin/pg_restore -a /tmp/royapuram.backup
ERROR: pg_restore: [archiver] unsupported version (1.10) in file header

2. Alternatively I used (after creating "royapuram" database
[root(at)adccs ~]# su - postgres
-bash-3.00$ psql royapuram < /tmp/royapuram.backup;
RESULT
ERROR: syntax error at or near "
" at character 1
and the whole terminal churns up junk characters and stops!

What do I do to restore!!
Regards
K. Rajaraman