O OpenWRT Wiki diz que você não pode manter os binários existentes, mas precisa reinstalá-los .
In particular, any manually installed software packages you may have installed after the initial OpenWrt installation have to be reinstalled after an OpenWrt upgrade. That way everything will match, e.g. the updated Linux kernel and any installed kernel modules.
Any configuration files or data files placed in locations not specifically listed as being preserved below will also be lost in an OpenWrt upgrade. Be sure to check any files you have added or customized from a default OpenWrt install to back up these items before an upgrade.
No entanto, Tolaris dá as seguintes comando para obter uma lista dos seus pacotes instalados:
opkg list-installed | cut -f 1 -d ' '