[Galaxy Note II N7105 Android Development] polrus:
HI Sorry for delay

I have done factore reset, flash ROM , FLash Gapps, not restore ,

also the mount comment I gave you before returns more of course - I wrongly assumed You are interested only in the /firmware mount.

Below is my complete mount

rootfs on / type rootfs (ro,seclabel,relatime)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,mode=755)
devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,seclabel,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt type tmpfs (rw,seclabel,relatime,mode=755,gid=1000)
none on /dev/memcg type cgroup (rw,relatime,memory)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
/dev/block/mmcblk0p13 on /system type ext4 (ro,seclabel,relatime,user_xattr,barrier=1,data=ordered)
/dev/block/mmcblk0p3 on /efs type ext4 (rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered)
/dev/block/mmcblk0p12 on /cache type ext4 (rw,seclabel,nosuid,nodev,noatime,errors=panic,user_xattr,barrier=1,journal_async_commit,data=ordered)
/dev/block/mmcblk0p10 on /firmware type vfat (ro,relatime,fmask=0133,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
/dev/block/mmcblk0p16 on /data type ext4 (rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered,noauto_da_alloc)
/dev/block/mmcblk0p11 on /tombstones type ext4 (rw,seclabel,nosuid,nodev,noatime,user_xattr,barrier=1,journal_async_commit,data=ordered)
tmpfs on /storage type tmpfs (rw,seclabel,relatime,mode=755,gid=1000)
/dev/block/loop0 on /magisk type ext4 (rw,seclabel,noatime,user_xattr,barrier=1,data=ordered)
/dev/block/loop0 on /sbin type ext4 (rw,seclabel,noatime,user_xattr,barrier=1,data=ordered)
/dev/block/mmcblk0p13 on /dev/magisk/mirror/system type ext4 (ro,seclabel,relatime,user_xattr,barrier=1,data=ordered)
/sys/kernel/debug on /sys/kernel/debug type debugfs (rw,seclabel,relatime)
/dev/fuse on /mnt/runtime/default/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /storage/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/read/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/write/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/block/vold/public:179_17 on /mnt/media_rw/6E20-1815 type vfat (rw,dirsync,nosuid,nodev,noexec,relatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
/dev/fuse on /mnt/runtime/default/6E20-1815 type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /storage/6E20-1815 type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/read/6E20-1815 type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/write/6E20-1815 type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)

I am not running Magisk, SuperSU, Substratum,

I tried quickly flashin Res Remix 7.1.1 to see if the sim would work there but it seems now it is broken everywhere.

There - in RR - I had root but then after flashing back to Your latest build I did not apply root.

Sounds like the either /firmware is mounted from wrong block device or the content of the block device is deleted.