My account will be blocked in one day it said if i dont update it,i dont know what it wants me to update though.
Welcome to the forums. Could you create an account to reply and give us some more info? Such as:
Is this a random pop-up?
Is it tied specific app?
Does it have a button or something to click?
Some services do have a timer that will shut your account down due to inactivity, but those typically give you a fair bit of notice (I.e. A month or so, and after a year of inactivity) and fully delete your account after. A security sensitive app/service may lock you out pending an update to prevent a hole from being exploited.
On the other hand, it could also be malware phishing scheme. They like to scare you into giving them account info so they can hack into your stuff. It would be as if I came up to you on the street and said I'd lock you out of Google if you didn't give me your login info to verify you are real. You shouldn't trust me, and you shouldn't trust these sorts of warnings without checking into them through legitimate sources.
That's why if you can give us more info, we'll be able to give you more specific answers.