Advanced firmware upload options

• Login to Carambola and download binary image to RAM. (Alter IP and path to match your binary image location)

scp test@192.168.0.104:/home/test/carambola_tester/bin/ramips/openwrt-ramips-rt305x-carambola-squashfs-sysupgrade.bin /tmp

• Perform upgrade procedure.

mtd -r write /tmp/openwrt-ramips-rt305x-carambola-squashfs-sysupgrade.bin firmware

These instructions are for Carambola2 board

• You will need TFTP server running on your PC. On Linux install package 'tftpd-hpa', on Windows - TFTPD32.

• Put sysupgrade image to your TFTP folder.

• Reboot or power up Carambola2 with serial console running and connected to PC.

U-Boot 1.1.4-g2dfdea36 (Aug  8 2014 - 10:33:34)

=====================================
Caraboot v2.0 (AR9331) U-boot
http://www.8devices.com/
-------------------------------------
DRAM:  64 MB
Flash: 16 MB
Net:   eth0, eth1
=====================================

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

Hit ESC key to stop autoboot:  0 
ar7240> INTERRUPT>
ar7240> <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)

tftpboot 0x80060000 openwrt-ar71xx-generic-carambola2-squashfs-sysupgrade.bin

ar7240> tftpboot 0x80060000 openwrt-ar71xx-generic-carambola2-squashfs-sysupgrade.bin
Using eth1 device
TFTP from server 192.168.1.20; our IP address is 192.168.1.1
Filename 'openwrt-ar71xx-generic-carambola2-squashfs-sysupgrade.bin'.
Load address: 0x80060000
Loading: T T T T T #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       #################################################################
       ######################################################
done
Bytes transferred = 3932164 (3c0004 hex)
ar7240> 

• 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.

erase 0x9f050000 +${filesize}; cp.b 0x80060000 0x9f050000 ${filesize}

ar7240> erase 0x9f050000 +${filesize}; cp.b 0x80060000 0x9f050000 ${filesize}
.............................................................
Copy to Flash... ............................................................done
ar7240> 

• Flashing is done, you can reset the board

reset