Tinkering OpenWRT (3) : Setting up OpenWRT on a Raspberry Pi

Step 1: Use an SD Card Reader to load up a MicroSD card.

Step 2: I'm using Raspberry Pi B+, that's an RPi 1.
So from:
     https://wiki.openwrt.org/toh/raspberry_pi_foundation/raspberry_pi
download:
     Raspberry Pi 1: http://downloads.openwrt.org/chaos_calmer/15.05.1/brcm2708/bcm2708/

Step 3:
Use etcher to make an bootable SD card.

Step 4: insert the bootable SD card to RPi.


ref:
https://www.raspberrypi.org/documentation/installation/installing-images/      !!!!!
https://etcher.io/                                                                                                   !!!!!

http://www.ct-networks.io/community/tutorials/openwrt-installing-firmware-on-raspberry-pi.html   !!
https://devzone.nordicsemi.com/b/blog/posts/trying-openwrt-chaos-calmer-1505-rc1-on-raspberry-
https://computers.tutsplus.com/articles/installing-openwrt-on-a-raspberry-pi-as-a-new-home-firewall--mac-55984
https://www.qualityology.com/tech/how-to-install-openwrt-on-raspberry-pi/
https://tecadmin.net/format-usb-in-linux/