Hi,

we want to upgrade a Mikrotik Routerboard RB493G from 12.09 to 15.05. There are no NAND-images in http://downloads.openwrt.org/chaos_calm … 71xx/nand/

Is there a compatibility problem with 15.05 or was the RB493G just forgotten?

Thanks for any hint,

Renne

All Mikrotik boards should use the images at https://downloads.openwrt.org/chaos_cal … /mikrotik/

Works just fine on my RB493.

Ray

Can I just use

wget2nand https://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/mikrotik/

instead of

wget2nand http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/nand/

?

This won't work as the file name that the wget2nand script is looking for doesn't exist with the correct file name.  I recommend you do the following:

Download the following 2 files to a work directory:

  http://downloads.openwrt.org/chaos_calm … x-lzma.elf
  http://downloads.openwrt.org/chaos_calm … tfs.tar.gz

Run the following commands to rename the files correctly for the wget2nand script:

  mv openwrt-15.05-ar71xx-mikrotik-Ath5k-rootfs.tar.gz openwrt-ar71xx-mikrotik-rootfs.tar.gz
  mv openwrt-15.05-ar71xx-mikrotik-vmlinux-lzma.elf openwrt-ar71xx-mikrotik-vmlinux-lzma.elf
         
On a Linux computer in the 192.168.1.xxx network connected to your RB493G run the following command to serve the kernel and root filesystem image:

  python -m SimpleHTTPServer 8080

From the RB493G run the following command to install OpenWrt to the RouterBoard 493 NAND (Replace the 15 in the ip number with the correct address of the system you ran the python command on):

  wget2nand http://192.168.1.15:8080

wget2nand asked for "-nand-" instead of "-mikrotik-". The files had to be renamed again (e.g. openwrt-ar71xx-mikrotik-vmlinux-lzma.elf -> openwrt-ar71xx-nand-vmlinux-lzma.elf).

After the upgrade the RB493G ended up with a kernel panic. So I had to go the DHCP/TFTP-way which worked fine with 12.09. But both "openwrt-15.05-ar71xx-mikrotik-vmlinux.elf" and "openwrt-15.05-ar71xx-mikrotik-vmlinux-lzma.elf" cause a kernel panic.

[    4.330000] Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[    4.330000] ---[ end Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.

Do you have any idea what's going wrong here?

Thanx for any hint!

To install 15.05, instead of preparing own http server I just edited wget2nand script and changed paths to proper files there.

But I have got the same "Kernel panic" issue with "https://downloads.openwrt.org/chaos_cal … /mikrotik/" on "RB493G"

"14.07" is working fine.

Any hint is greatly appreciated.