Hi everyone
I’m exited to join the flow community.
I tried to stake flow on my ledger and followed the instructions .Epochs, Staking & Delegating on Flow - Flow Documentation
However, When I click Stake& Delegate it says: “An upgrade to your account is needed.”?
Thank you for your help
mus
Is there anyone who can help? I really appreciate your support. Thank you
There was a recent update to flow port to support a more sophisticated and robust method of staking. Every user who uses flow port must perform the upgrade in order to stake, so I would recommend doing the upgrade. 
Does that help?
Hi flowjosh
Thanks a lot 
Yes, that helped and staking is completed. One additional question: I want to transfer more flow on port.onflow from an exchange. Am I right that I just enter in the exchange my address. There is no need to klick on “get flow” and then choose from “claim Flow as a backer” or “earn flow as a validator”. What does backer mean? What is that needed for?