Solution found.  :-)

Every time I need to log into iCloud on my iOS 5.1.1. device I will need to 
generate a new Verification Code.  Then instead of using ONLY the AppleID 
password, I will have to add the Verification to the end of the password in one 
long string. 

Seems to work okay. A bit fiddly, but the old device is back on track. 

Cheers

Tim





> On 15 Apr 2018, at 9:43 am, Tim Law <[email protected]> wrote:
> 
> Hello,
> 
> I have an old iPad version 1 using iOS 5.1.1 that has been unused for a 
> while. I would like to be able to log into iCloud but have activated Two 
> Factor authentication some time ago. I am running High Sierra OSX 10.13.4 and 
> iOS 11.3
> 
> In https://support.apple.com/en-au/HT208072  “Generate a recovery key after 
> you update to two-factor authentication” it gives the directions to go to 
> iCloud preferences and generate a new Recovery Key. But the only option is to 
> give an Verification Code, not a Recover Key.
> 
> in iOS 5.5.1 on the iPad, I go to iCloud settings, enter my AppleID password 
> and the next screen asks for the Recovery Key.
> 
> I have no idea where I may have kept my Recovery Key. Generally I would have 
> stored it in 1Password, but must have failed to do so because I cannot find 
> it.  
> 
> Is there a way to generate a new Recovery Key? or another way to move forward 
> for this old iPad.
> 
> Thanks
> Tim
> 
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