The stripped-back take on the track will be available to download on February 19, along with an EP of remixes of the song.
The EP includes the new version of 'Want U Back' featuring rapper Astro, as well as the radio edit and re-workings by Cahill and Pete Phantom.
LLoyd recently told Digital Spy of the single: "It's basically a track from lots of different girls' stories out there.
"A lot of people are telling me they can relate to the track and they've been in that situation, but it's also got an element of fun in it."
The singer's X Factor mentor Cheryl Cole recently responded to Lloyd's suggestion that she uses Auto-Tune, commenting: "Be Careful who you kick on your way up... They kick you twice as hard on your way back down. (sic)"
> Read Digital Spy's review of 'Want U Back'
Listen to 'Want U Back' (Acoustic Mix) below: