A music video for "So Sexy" was released on 8 June. Brave Girls also made a cameo appearance with Superkidd on the SBS drama, "Protect the Boss". On 22 July, Brave Entertainment announced that the group would make a comeback during the same month, and shared concept photos of their mini album "Back to da Future". Their title track, "Easily", featuring Korean reggae artist Skull, was released along with the music video on 28 July. Brave Brothers stated that the song was homage to Kim Gun-mo's "Excuse". The full EP was released on 29 July and peaked at number 14 on the Gaon Album Chart, selling 1,606 copies. The group participated at the 3rd Idol Star Athletics Championship on September and, on 3 November, made a cameo appearance in "Mr. Idol" with Chocolat and various other idol groups. At the 19th Korea Culture Entertainment Awards on 15 December, the group received the "Rookie of the Year" award. Following this, on 25 December, they appeared on KBS's "Let's Go Dream Team!" as special guests, and performed for contestants on the show. On 22 February 2012, Brave Girls' second mini album "Re-Issue" was released, with the group holding a showcase that included a guest performance from Teen Top. The EP peaked at #14 on the Gaon Album Chart. The title song "Nowadays" charted highly on charts and became one of the most searched topics on Korean websites. On 29 August 2013, it was announced that Brave Girls would have a comeback in the fall, with a new song titled "For You" to be released on 31 August. In February 2014, Brave Brothers reported that he was going to be working on a full-length album for the group, but the album was put on hold indefinitely due to his working with AOA. Brave Girls remained inactive for the following two years. In February 2016, after a -year hiatus, it was announced that Brave Girls would be making a comeback as a seven-member group, with five new members and two original members. The group released "Deepened" on 16 February as a digital single, with new members, Minyoung, Yujeong, Eunji, Yuna and Hayun and original members Yoojin and Hyeran. On 19 June, it was reported that the group would be releasing their third mini album in June 2016. "High Heels" was released on 27 June, alongside the music video for title track "High Heels".