The trophy is unlocked when, after dying, you find your previous body and choose to retrieve it. The earliest opportunity to obtain the trophy is immediately after obtaining the unmissable Vestiges of Prosperity trophy. Following that point, after you die and respawn, you will be able to see your previous body marked with a green indicator on the in-game map.
Proceed to that point and locate the previous body. Interact with it to bring up a "Body Report." You have two options--Retrieve and Repair. Selecting Retrieve recovers the plug-in chip and gives you the option of restoring your previous equipment. Doing this the first time this occurs will unlock the trophy. The other option, Repair, does not restore the plug-in chips to 2B but reactivates the previous body as a third party member. Doing so will not unlock the trophy.
To earn this trophy immediately when it becomes available, right after you get the Vestiges of Prosperity trophy allow any enemy machine or animal to kill 2B. 2B will respawn where the Vestiges of Prosperity was unlocked. Open the map and identify the location of the previous body marked with a green 'arrow.' Go to that location and find the previous body. Alternatively, you can simply proceed directly to the point where 2B met her end without checking the map. Once you locate with the previous body, interact with it. Choose Retrieve when asked whether you want to retrieve or repair (or cancel). Then select to restore the previous equipment. The trophy will unlock when you select Yes.
Note: Although this trophy will almost certainly be unlocked during normal game play if not done deliberately, it is one of the trophies available for sale at the secret trophy shop. This special shop becomes available after three playthroughs. This trophy can be purchased with 50,000 gold.