You may need to press FN-F5 more than once to cycle through the various options (on other laptops, I've seen them cycle through "all off", "all on", "WiFi only", "Bluetooth only" but not necessarily in that order). This can be done from the action bar (Notifications sidebar) or it can be done by pressing FN-F5.
Ensure Windows 10 is not in aeroplane mode.I'm also colour-blind and had the colour checked by my daughters (females are almost - almost - impossible to be colour-blind). For colour-blind users, note that the alternative is black (off), so you will be able to distinguish this indicator. Ensure that the wireless hardware switch on the left side of the X220 is switched to the GREEN (on) position.I recommend a reboot after installing these drivers. Installing the following Broadcom Bluetooth drivers, strangely from the Hewlett-Packard website, allowed Windows 10 to detect Bluetooth on the BCM92070MD on my Thinkpad X220. The BCM92070MD is a Bluetooth 3 module and does not seem to require any particular version of the BIOS, although it does continue to work with a modified BIOS such as the Whitelist BIOS. Note that the Bluetooth antenna is printed on the module itself, it does not require a separate antenna connection. Indeed, until I stripped down my Thinkpad, I assumed I didn't have a Bluetooth module! This module has its own dedicated hardware interface (a "BDC socket") beneath the palm rest, and does not take up the mSATA nor PCIe half mini card slots (the PCIe socket on my Thinkpad was already occupied by the Intel N 6205 b/g/n WiFi adapter). This is not detected by Windows 10 by default (amusingly it does appear to be detected by default by Linux distros such as Ubuntu/Mint etc.). The Bluetooth module that came fitted to my Lenovo Thinkpad X220 was the Broadcom BCM92070MD_LENO.
Pairing and detecting also appear to be faster and more consistent. It took two or three reboots but the Windows 10 drivers were detected automatically (no downloads required) and it has remained rock solid ever since. The only solution appears to be to replace the hardware module with a 60Y3303 or 60Y3305 Bluetooth 4.0 module. You can reinstall the drivers, but they'll be removed at the next reboot.
Update: As of spring/summer 2019, Windows 10 will remove the drivers for the BCM92070MD / 60Y3271 Bluetooth 3.0 module that shipped by default with many Thinkpad X220 laptops. Bluetooth on the Lenovo Thinkpad X220 with Windows 10 - Andrew OakleyĪ Bluetooth on the Lenovo Thinkpad X220 with Windows 10
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