Telias TG799vac Forced Upgrade

root@OpenWrt:~# cp /mnt/usb/SanDisk_Ultra_1_69e1/TG799vac_FW/vant-f_CRF687-16.3.7567-660-RG.rbi /tmp
root@OpenWrt:~# cd /tmp
root@OpenWrt:/tmp# sync
root@OpenWrt:/tmp# sysupgrade -v -F vant-f_CRF687-16.3.7567-660-RG.rbi --nosig
Unlocking bank_2 ...
Erasing bank_2 ...
Image check 'platform_check_image' failed but --force given - will update anyway!
Saving config files...
etc/sysctl.conf
etc/shells
etc/shadow
etc/rc.local
etc/profile
etc/passwd
etc/nginx/ui_server.conf
etc/nginx/server.key
etc/nginx/server.crt
etc/nginx/nginx.conf
etc/nginx/mime.types
etc/nginx/main_qeo.conf
etc/nginx/main_intercept.conf
etc/iproute2/rt_tables
etc/inittab
etc/hosts
etc/group
etc/dropbear/dropbear_rsa_host_key
etc/dropbear/dropbear_dss_host_key
etc/dropbear/authorized_keys
etc/dnsmasq.conf
etc/crontabs/trafficmon-ubus
etc/crontabs/root
etc/config/xtm
etc/config/xdsl
etc/config/wireless
etc/config/wifidoctor_station_importance
etc/config/web
etc/config/watchdog
etc/config/wansensing
etc/config/wanatmf5loopback
etc/config/versioncusto
etc/config/version
etc/config/user_friendly_name
etc/config/upnpd
etc/config/uploaddiag
etc/config/txmember
etc/config/traceroute
etc/config/tod
etc/config/telia
etc/config/system
etc/config/snmpd
etc/config/siege
etc/config/samba
etc/config/qos
etc/config/pppoerelayd
etc/config/power
etc/config/portmirror
etc/config/parental
etc/config/osgi
etc/config/network
etc/config/mwan
etc/config/mobiledongle
etc/config/mmpbxrvsipnet
etc/config/mmpbxinternalnet
etc/config/mmpbxbrcmfxsdev
etc/config/mmpbxbrcmdectdev
etc/config/mmpbxbrcmcountry
etc/config/mmpbx
etc/config/mmdbd
etc/config/minitr064d
etc/config/minidlna
etc/config/mcastsnooping
etc/config/iqos
etc/config/ipping
etc/config/intercept
etc/config/igmpproxy
etc/config/firewall
etc/config/ethernet
etc/config/env
etc/config/dscp2pbit
etc/config/dropbear
etc/config/downloaddiag
etc/config/dhcprelay
etc/config/dhcp
etc/config/ddns
etc/config/cwmpd
etc/config/cwmp_transfer
etc/config/button
Closing voice...
no process in pidfile '/var/run/polling-led.lua.pid' found; none killed
rmmod: can't unload 'modmmconnkernelbrcm': unknown symbol in module, or unknown parameter
rmmod: can't unload 'endpointdd': unknown symbol in module, or unknown parameter
rmmod: can't unload 'dect': unknown symbol in module, or unknown parameter
rmmod: can't unload 'modmmtonegen': unknown symbol in module, or unknown parameter
rmmod: can't unload 'mod_rv_rtp': unknown symbol in module, or unknown parameter
rmmod: can't unload 'modmmswitch': unknown symbol in module, or unknown parameter
Sending TERM to remaining processes ... logread ubusd status-led-even ledfw.lua swmdk bcmubusbridge netifd wansensing.lua odhcpd crond lua lua rcS logger lua mcsnooper neighmd smbd nmbd igmpproxy cwmpd lua nginx nginx ntpd minidlna_bg siege_jvm syslogd klogd hotplug2 dnsmasq minidlnad tail
Sending KILL to remaining processes ... lua
Switching to ramdisk...
open: No such file or directory
Performing system upgrade...
ash: logger: not found
Only upgrading bank_1 or bank_2 is allowed
ash: can't create /var/state/sysupgrade: nonexistent directory
@OpenWrt:(unreachable)/root# reboot