Just got a RAZR M yesterday
I am not sure about pairing to a Logitech headset. I was able to successfully pair mine with the hands free in my Kia Soul with no problem at all.
yeah, i've paired to both a bluetrip device in my car and a logitech portable speaker w/ no problems. make sure you're making the device discoverable before you search w/ your phone.
is your logitech headset on discoverable? i know i have to hold down the power button on my motorola bluetooth headset until it turns solid blue for my nexus to find it. I am positive you know what you are doing as it seems you may have had this for a while.
what version of android is the M operating on? it might work if you end the google framework service, reboot the phone and try it again.
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