OK, I've downloaded again the very latest driver version for Bluetooth and Intel Wireless-N 7260:
Bluetooth 17.1.1406.01 x64:
Intel Wireless-N 7260 17.0.6 x64: (drivers only)
I've installed both and restarted. This is what I have:
Bluetooth:
Version I download and install: 17.1.1406.01
Version Device Manager detects: 17.0.1428.1
Version Intel Driver Update Utility detects: 17.0.1401.0428
Wireless:
Version I download and install: 17.0.6
Version Device Manager detects: 17.1.0.19
Version Intel Driver Update Utility detects: 17.0.5.0
What the hell?
PD: now Intel Driver Update Utility says I'm using the current driver version in both Bluetooth and Wireless-N 7260. So the problem is solved after that Windows Update I've posted in the previous message. BUT I see the that there should be at least 2 warnings, cause none of the 2 drivers are up to date according to Device Manager.