Do not install this in your navigations. The guy who released this has no idea what this update does. These files are from the beginning of the mstd project. This update removes the file that contains the vcrn and metainfo public key. The lack of this file has the same disadvantages. After update your VCRN in measurement blocks is 00 00 00 00, online geko coding problem, device won't accept any update anymore, there will be no information for metainfo parser. Yes, the device accepts the codes added in the FEC_DB file, but not always. One more trick is needed. More harm than good. No CID off. There is no patch for fec_db/slist.txt signature at all. What is it? Everyone who installed it and didn't have fecs added to their maps are now in a very big problem. That doesn't mean it can't be fixed. Only 3 people have correct Mstd instructions. One type in Poland, another in Hungary and the one that started it all in Germany. Those who installed it can now ask the guy who shared it to fix it