Det finns ingen Canons rekord av vad som hände med honom. Men han har ytterligare äventyr i Legends Canon.
Från Wookieepedia :
After failing to make a sale, the Squib trader Macemillian-winduarté stole R5-D4 from the Jawas, saving the droid from destruction at the hands of stormtroopers. R5-D4 then changed hands once again in Mos Eisley, being sold to Voren Na'al, Rebel Alliance historian and spy. While communicating with the droid through a datapad, Na'al learned a great deal about the sale of R2-D2 and C-3PO to Owen Lars. Na'al then refurbished the maltreated droid and installed an intelligence gathering software package. Decades of low self-confidence and jealousy were reversed: R5-D4 had a purpose. R5-D4 was placed as an intelligence gathering source in the office of the Imperial Prefect's administrative assistant in Mos Eisley. He continued to serve in that capacity, providing important and valuable data to the Alliance, until the Battle of Endor.