Default [Q] Create Update.zip Directly From Phone

Greetings People of the Forum!

I am in sad affairs. I am trying to find a stock rom for an Alcatel A554C - it's a One Touch version from Alcatel - there is not one available from the internet and I have done some SERIOUS searches. That said, as I cannot do a backup from the phone (the recovery module is so sparse there are like 3 options in the menu when you boot to it), I have developed a new goal.

HOW DO I CREATE AN UPDATE.ZIP FILE FROM THE FILES ON THE PHONE ITSELF.

I have found a tutorial on how to create the boot.img - done and I can extract the system folder from the rooted device to the PC

My frustration comes in creating the META folder and all the sub-materials

Or is there a one stop shop for extracting and creating the update.zip, completely structured, in one fell swoop?

Thank you so much,

Steven