diff --git a/README.md b/README.md
index 12042a5..d131c7a 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ This addon can be used to easily up- and downgrade the RaspberryMatic system.
 * Download adjusted RaspberryMatic image:
   * [RaspberryMatic-2.27.8.20170615-rpi0.rmupdate.img.zip](https://www.dropbox.com/s/cikwkap0e1yxly0/RaspberryMatic-2.27.8.20170615-rpi0.rmupdate.img.zip) SHA256 sum: 904edb9c4a565d65a9dfdd3ffe05ed4bc24f9f909b602d6de7cbcb5560418dfb
   * [RaspberryMatic-2.27.8.20170615-rpi3.rmupdate.img.zip](https://www.dropbox.com/s/6mzz9l6h4460we5/RaspberryMatic-2.27.8.20170615-rpi3.rmupdate.img.zip) SHA256 sum: c665667beb68d7d25b6f4210ea6c23471e1c0834ffc53a1abd2f917a9620322a
+  * [RaspberryMatic-2.29.23.20171216-tinkerboard.rmupdate.img.zip](https://www.dropbox.com/s/59oay0bz08quvf9/RaspberryMatic-2.29.23.20171216-tinkerboard.rmupdate.img.zip) SHA256 sum: b4ee09cf16214d9bb3033537f4a96704fdebf022af32d9352707762e04aeec8f
 * Install adjusted RaspberryMatic image like described at [RaspberryMatic project](https://github.com/jens-maus/RaspberryMatic)
 * Download [addon package](https://github.com/j-a-n/raspberrymatic-addon-rmupdate/raw/master/rmupdate.tar.gz)
 * Install addon package on RaspberryMatic via system control