The same here with CCR1009-7G-1C-1S+. The last ROS which can see the SD card is 6.49.7. Nothing with 7.x.x up to 7.7-beta8. I hope MikroTik will not decided to cancel support for SD card reader at all, even though the usability of SD card on CCR1009 or CCR1036 (maybe all CCR) is very limited due to very slow speed referred it this thread http://forum.mikrotik.com/t/what-speed-of-usd-card-reader-is-used-in-the-routerboard-products/154041/1
Mikrotik Support gave me an answer..
RB760iGS and RB750Gr3:
Upload to microSD ~51.8Mb/s
Download from microSD ~54.7Mb/sCCR1009-8G-1S-1S+
Upload to microSD: ~2.8Mb/s
Download from microSD: ~1.9Mb/s