I have "debricked" the Omega 2+ with the new power dock and have installed the b160 image on to it. My next project is to build an LEDE cross compiler for Mediatek.

Thanks so much for all your advise.

Thanks Georgy. I will try reflashing the b160 Omega OS via USB once i am able to get serial access to the dock. I will try your instructions on the Arduino dock and update.

Thanks and Regards.

Thanks again, Chris.

Its a good idea to use the CP dongle for serial access, however i have ordered a new expansion dock - costs about 15$ here in Australia - as i may need serial access now and then and also no need to muck around with the wiring!

Now that i am left with two boards - Power Dock and an Arduino Dock - for which the hard reset button is not working, can we RMA this back to Omega?

Building working firmware from source is quite complex; there are threads on it here, but after months and months of broken promises Onion is still yet to release of sources that actually work.
Yes agreed! I am just wondering how Onion released these products without any proper QA? I have found a lot of very basic problems even in module seating, very little air gap between the modules, chip overheating etc etc, let alone the OS and software build issues !!

You can however build Mediatek's version of OpenWRT for their LinkitSmart board and probably run it on the Omega 2, if you change the serial port assignments and perhaps make a few other adjustments.

OK. thanks will try this out. So, i have to just pull the WRT SDK and tool chain from Mediatek and push the compiled binaries on to Omega? and is the target architecture on menuconfig selected "Ralink" ?

Hi Chris,

Thanks for your reply.

The menuconfig I have is currently set to 'Atheros AR7xxx/AR9xxx'. ... I don't see any options resembling either 'ramips' or 'mt7688'. Is any other target to be specified for Omega 2 and/or Omega 2+?
I am using the openwrt files for the latest and great "TRUNK" version.

Thanks and Regards.

Thanks for your reply.

The WRT build was done based on the instructions contained in the following URL.
https://github.com/OnionIoT/OpenWRT-Packages/wiki/Setting-Up-the-Cross-Compile-Environment. Is this outdated? and is there any other method to build WRT packages and transfer compiled files to the Omega?

As far as Serial access is concerned, there seems to be four Omega board offerings with different feature sets which is really confusing!!

1. Expansion Dock - This dock contains a USB to Serial Interface chip.
2. Power Dock - Does not contain USB-Serial chip set.
3. Mini Dock - This dock contains a USB to Serial Interface chip.
4. Arduino Dock - Does not contain USB-Serial chip set.

So, i am left with no choice now but purchase an Expansion or a Mini Dock and obtain serial access to Omega.

Thanks and Regards.

Hello,

Build Details are as follows:

1. Built WRT Cross-compile environment for Onion on Ubuntu 16.04.02 VM. This was successful.
2. The Omega 2/2+ (in a Power Dock as well as Arduino board) was flashed using the following command:
   sysupgrade -v -F openwrt-ar71xx-generic-onion-omega-squashfs-factory.bin.

Results observed:

1. Omega 2 hangs after flashing and Amber LED on the Omega 2 chip-set is continuously lit.
2. Cannot login into Omega wifi using apcli0 or Omega AP IP address ( cannot see Omega wifi ssid at all)
3. Resetting to factory defaults does not work.(Press and hold the reset key for 10 seconds)
4. As there is no USB to serial chip in the power/Arduino dock, not possible to access Omega serially via the micro-USB port.

Thanks and Regards.