OS 5.0.0.656 For the BB 9700 was leaked more than a month ago and now TurkCell has officially released it. The OS seems to be working just fine on my 9700, and you can download this official version at this LINK.

If you are having trouble installing you may want to read our step by step guide on how to upgrade your OS. This is an official OS but sometimes DM does not recognize it. Thanks to timnmagoo for the tip.