XPS13 (9343, Early 2015) Wireless issues after Windows Creator Update (Build 1709)

Hi:

After upgrading my XPS13 to last Creator Update (Build 1709) I face a lot of wireless issues.

• Many wireless networks availables do not show on the list of available networks even if are active and I can connect with other devices
• takes a very long time to connect to wireless networks and shows the yellow triangle and need to try several times until it connects.
• After sleeping or hibernating the laptop it does not connect to any wireless network. I need to restart and wait for quite a long time (over 5 minutes sometimes) until XPS13 connects again.
• XPS13 easily disconnects from active wireless networks

Before updating to Windows Creator Update (Build 1709), XPS13 worked like a charm.

• Already run Dell diagnosys and did not detect anythinh wrong.
• Uninstalled and reinstalled Dell Wireless 1560 802.11 ac

But still facing the wireless issues. It makes working with my XPS13 difficult.

So I would like to know:

• How could I check what is wrong?
• Could I uninstall the 1709?
• if that was not possible: How could I do a fresh install (and do not loose the Windows Pro upgrade I bought some months ago)?

Many thanks!

Pak