Clean flash from CM11 (no simcard detected)

I'm the happy owner of a S3. A few years ago I installed CM11 which gave my phone a new boost. A few months ago I noticed the development of CM13 for this device. With the arrival of the snapshots I think it's time to upgrade.

I'm familiar with the CM13 on another device (Galaxy Tab 2) so I think I know how it works.
I tried several times but the problem is that my SIMcard is not detected.

I use this device as my daily phone, so luckily every time after restoring to my current CM11 everything works fine again.

Current
CM version: 11-20141115-SNAPSHOT-M12-i9300 (smallband I9300XXUGNA8)
TWRP version: TWRP 3.0.2-1
(Living in the Netherlands)

To install:
cm-13.0-20160820-SNAPSHOT-ZNH5YAO0J2-i9300
open_gapps-arm-6.0-mini-20160901

1. sync several apps
2. reboot to TWRP recovery
3. full backup to External SD
4. wipe (factory reset)
5. advanced wipe (cache, dalvik cache, data, system)
6. connect USB-OTG
7. install (in queue: cm-13.0 + open_gapps)
=> no errors
8. wipe cache, dalvik cache
9. reboot to system

during configure: No simcard detected
10. ignore
11 finish configure
12 enable root

sim working: no ( but with sim pincode ON not possible to pass lockscreen )
imei: correct number (checked with DevCheck)
smallband: yes (I9300XXUGND1)
contacts: yes

Also tried to reboot and
To shutdown + remove sim + boot + shutdown + reseat sim + boot
=> nothing

Revert to CM11 and everything works like it should.

The whole world is happy with this CM13 build (and newer nightlies), so I can't believe it has something to do with the rom.
So, what am I doing wrong? Wrong combination of software? Something with partitions, filesystem, etc?
Something with my carrier (Vodafone) combined with the XX modem and radio (while should need XP for Netherlands)???

I'm out of options. Please help.
Thanks in advance, René

from xda-developers http://ift.tt/2cfTSiD
via IFTTT