Openwrt - Modifying the repositories

Sometimes the Openwrt's repository is not always correct, please modify using the following.

1. SSH to the AP and navigate to /etc/opkg.conf
2. Modify the URL to the one you want
   src/gz barrier_breaker http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages/packages/  >>You can change this URL to whatever you want
3. Update the opkg list
   opkg update
4. Install whatever package you want using opkg install.