Two serious mod you need in order to print flexible.
1. Update your firmware to repetitor-firmware, not stock firmware from xyzprinting. repetitor-firmware allow you to use 3rd party filaments. But It may not be easy. Read the instruction and see if you are confident you can do it, and wait to see what other said about this. I think it worth the effort because it opens all kinds of possibility. You can use 3rd party software and 3rd party filament (which is way cheaper than xyzprinting and you have more choice of colors).
http://www.soliforum.com/topic/16731/ho … updated-2/
2. Upgrade your stock hotend to E3D, this will also allow you to print PLA as well as flexible filaments, it does not cost a lot of money ($10-20), but there is a lot to learn in order to do it.
http://www.soliforum.com/topic/16192/da … ect-drive/
Neither is easy, but they both worth the effort. Again, if your printer is working, don't mess with it. Wait for one day your get a filament jam and you tried to convince yourself the hotend is broken, or the desire of print in flexible drives you crazy, or your taste for ABS lovely smell fade away...
(Da Vinci 1.0, Jr. 1.0 RAMPS, miniMaker) X4, (Creality CR-10S, CR-10 mini, Ender-3) X4, Anycubic MEGA X4, Anycubic Chrion X1, ADMILAB Gantry X2 (MonoPrice Maker Select V2, Plus, Ultimate)X4--Select mini X1, Anycubic photon X4, Wanhao duplicate D7 X1.
iNSTONE Inventor Pro X2, CTC Dual X2, ANET-A8, Hictop 3DP-11, Solidoodle Press, FLSUN I3 2017X1