You left out the step "2. Kareha Image and Discussion Board" (see here).by iceflower - PirateBox OpenWrt
The documentation on openwrt:diy says: "You should wait 15-20 minutes for the installation to complete[...] Please do not try to visit 192.168.1.1 during the installation process [...] this IP could interfere with the installation.". How can I determine that the installation is done? Just wait until I see the box via wifi or do the LEDs tell me something? Nice project by the wayby iceflower - PirateBox (General)