Correct (at least for today, tomorrow's snapshot will be named slightly differently).
That is optional, but recommended for this device, the steps are simple (via a ssh session):
# opkg update
# opkg install luci-app-advanced-reboot
Alternatively this is also possible via OpenWrt's webinterface (luci-app-opkg), under System/ Software.
Awesome, thank you so much
Hi Again here,
I'm now on OpenWrt !
I tried to create a samba storage interface on that now.
I'm with version 19.07 snapshot of today.
I don't found the mount menu under "system", I guess it is not native but how to add it?
Nothing found in software list linked to that or I missed somthing.
Thanks
You need to install block-mount.
Seems like your initial problem (flashing from OEM) is solved.
If it really is, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.
Greetings, today I flashed my NBG6817 trough web interface from genuine firmware V1.00(ABCS.9)C0
I uploaded this file form web interface Firmware Upgrade: openwrt-19.07-snapshot-r10321-c85f9a245a-ipq806x-zyxel_nbg6817-squashfs-factory.bin
and it worked well, big thanks to active members on this forum 
Hi
I'm not the creator of the topic so I can't mark it as solved
Oops, my fault.
Anyways, 2 confirmed successfull flashes makes me think that this topic can be declared as solved.
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