====== Advanced firmware upload options ======

===== mtd =====
  * Login to Lima and download binary image to RAM. (Alter IP and path to match your binary image location)

  scp test@192.168.0.104:/home/test/openwrt-8devices-v2.9-ar71xx-generic-lima-squashfs-sysupgrade.bin /tmp

  *  Perform upgrade procedure.

  mtd -r write /tmp/openwrt-8devices-v2.9-ar71xx-generic-lima-squashfs-sysupgrade.bin firmware

===== Manual U-boot TFTP flashing =====

**These instructions are for Lima board**

  * You will need TFTP server running on your PC. On Linux install package 'tftpd-hpa', on Windows - [[http://tftpd32.jounin.net/|TFTPD32]].

  * Put sysupgrade image to your TFTP folder.

  * Reboot or power up Lima with serial console running and connected to PC.

  U-Boot 1.1.4-g4ef14f8b-dirty (Apr 11 2016 - 14:56:54)
  
  =====================================
  Caraboot v2.5-dev (QCA9531) U-boot
  http://www.8devices.com/
  -------------------------------------
  DRAM:  128 MB
  Flash: 64 MB
  Net:   eth0, eth1
  =====================================
  
  Hit '<ESC>' key(s) to stop autoboot:  0 
  ath> 

  * Press <ESC> to enter U-Boot console, press <Ctrl+C> few times to clear console buffer

  Hit '<ESC>' key(s) to stop autoboot:  0
  ath> INTERRUPT>
  ath> <INTERRUPT>

  * Set IP adresses of TFTP server and device (adjust addresses to match your setup):

  setenv ipaddr 192.168.1.1; setenv serverip 192.168.1.20

  * Download firmware from TFTP server (file name can be changed if you need)

    ath> tftpboot 0x80060000 openwrt-8devices-v2.9-ar71xx-generic-lima-squashfs-sysupgrade.bin
  eth0 link down
  enet1 port1 up
  dup 1 speed 1000
  Using eth1 device
  TFTP from server 192.168.1.20; our IP address is 192.168.1.1
  Filename 'openwrt-8devices-v2.9-ar71xx-generic-lima-squashfs-sysupgrade.bin'.
  Load address: 0x80060000
  Loading: #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           #################################################################
           ######################################################
  done
  Bytes transferred = 3932164 (3c0004 hex)
  ath> 

  * Next step erases old firmware and writes the new one. **Only** perform it, if previous step was successful and '''Bytes transferred =''' matches actual size of firmware image file.

  ath> sf erase 0xC0000 +${filesize}; sf write 0x80060000 0xC0000 ${filesize}
  SF: 4194304 bytes @ 0xc0000 Erased: OK
  SF: 3932164 bytes @ 0xc0000 Written: OK
  ath>

  * Flashing is done, you can reset the board

  reset