We've had a mare this morning with the latest update having not done one before.
Downloaded via the BMW App, went to update/install into the car last night and followed the on screen prompts on the iDrive and left it to do it's thing last night as the car sat in the garage.
The 'boss' went to the car this morning and it wouldn't start, nothing from the ignition button just a message on the iDrive to say the update was installing and it was sat at 21% and moving sooooo slow that the 'boss' took the decision to work from home.
No keys worked, we couldn't lock/open the doors and there was no ignition/dash lights while it was updating and no way to over ride it, great if you need to use the car!!!
15mins later, my wife gets a message on her phone to say the install was complete, back to the car and hey presto, keys worked.
I've now found out that one of the prompts either via the iDrive or App was to 'lock' the car. My wife didn't do this as we have an integral garage and don't lock it. I reckon the update stalled/failed due to this, lesson learnt there.
All good now but no idea what's improved/been updated.