You wrote in your first post "I installed v 18.06.0 ". But that does not look like that. You have installed something else but probably not 18.06.0.
The file you flashed on your device is named netgear_dm200-squashfs-factory.img or netgear_dm200-squashfs-sysupgrade.bin and have the sha256sum 476db4aa7ffe153cef3c7c0526fffdb0acefa19b52eab8d446ea717cd8bfb4c4 or 628196f52a816a053fedc717671e70179c771ea496018377d3877a0092d85cb8 ? If not, then you have flashed something else.
Snapshot builds do not have a release number in the file name. That is what you flashed. sysupgrade should still be present in those though.
After you scp the new firmware to the router, then you would ssh log in to the router, cd to /tmp on the router (where scp placed a copy of the firmware image), and run sysupgrade. You may have tried to run sysupgrade as a command on your PC instead of on the router. That will not work.
The error message when you try to run a command on the router that is not present is something like:
Well I managed to use sysupgrade to flash openwrt-18.06.0-lantiq-xrx200-netgear_dm200-squashfs-factory.img and it looked like it finished successfully:
Commencing upgrade. Closing all shell sessions.
Connection to 192.168.1.1 closed by remote host.
Connection to 192.168.1.1 closed.
However now the power LED is flashing and I cannot access the modem via ssh
You should always wait at least those 15minutes. Its a known safe time to wait after each flash.
And even without that: Why did you "restart" it? A sysupgrade always restarts the device itself when its done. Its same workflow on all routers i know. Indipendent if its openwrt, dd-wrt, netgear, tp-link, avm fritzbox, ...
You give them a file and press update and wait until they reboot and are available again with the webbrowser. You never cut off the power in such cases. Just when after 15 or even 30 minutes the device is still not accessable, then you can try to cut off the power.
The DM200 devicepage is still missing installation instructions.
This would be an opportunity to also add a clear statement like "Wait at least15min for the flashing process to finish."
Is anybody up for adding installation instructions to the devicepage?
Even with the official/stable/whatever 18.06.0, which I successfully flashed, it could not connect to my ISP, so there is some issue with the firmware for this modem...
Case close, modem bricked, modem binned.
Thanks for taking time to respond!
Please dont throw working lantiq xrx200 hardware away! Its just the firmware you have to reflash because for some unknown reason you have disconnected the power of the router inside of the upgrade process - a workflow that its never done on any router, independent of the OS running on it.
Your ISP requires VDSL vectoring support? Then follow my howto here:
I checked the wiki of your device:
U-Boot 2010.06-12284-ga4702df (Mar 03 2016 - 13:07:38)
[...]
Client starts...[Listening] for ADVERTISE...TTT
Retry count exceeded; boot the image as usual
It looks like a propper u-boot. Please defenetly dont throw it away. Just install the firmware without cutting off the power while updating - or even - without cutting off the power ever when you are not just willing to get into u-boot.
@tmomas
Could you please remove the "done" flag on this forum topic? Because the solution is for sure not "throw working hardware away"! And it should never be on working hardware! We live in a non-endless world! Dont waste the world!!!
I've tried putting the modem into Recovery by powering it off then holding the reset button turning it on and holding the reset button for about 20 seconds. I tried
tftp 192.168.1.1 then mode binary finally putxyz.img
All I get is 'Transfer timed out'
Tried pinging it > no luck
Any suggestions?
Thx
THANK YOU!