i sold all my reg theives guild armor and i keep geting the dialog to upgrad ethe theives guild armor is there a way i could get the reg set without starting a new char? i am on the xbox

help me plz

If you have already sold all the regular thieves guild pieces then, if possible, buy one piece back and upgrade it.

If you have permanently lost the set then you are pretty much SOL...
You may either have to start a whole new character OR you will have to revert to a save that still had the Thieves Guild armor.

There are pieces scattered all around the Ragged Flagon. The boots and gloves are both besides the 2 drawers near the "Master Bed" the one with that strange green wall.

The chest and hood are in the training room with the archery targets and chests. Hood I believe is on a barrel, chest is above a wardrobe.