Get rid of Another update is currently in progress

I was trying to update my wordpress core to 4.5.1 but my system was missing some permissions, and now after giving correct permission, I cannot get rid of that message and I cannot upgrade.
Tried to look for a .maintainance file but there is not.

How do I update now?

Thanks for help

It is an automatic lock to prevent simultaneous core updates. It will be gone after 15 minutes. If you don’t want to wait, delete the record from options table – usually wp_options.

Since WordPress 4.5:

option_name="core_updater.lock"

If you have an older installation (before WordPress 4.5):

option_name="core_updater"   

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