ONLY FOR DEAD RECEIVER - NOTE: For remote control problem after latest upgrading pls: 1. Use "ThreeStar TS-520pro dumpfile.rar" file to recover the receiver from the dead-lock; 2. Use the firmware "flash-TS520-20150609" to upgrade the receiver by USB. NOTE: Pls make sure to select "ALL Code" Section when in the menu of "Software Upgrade". 3. after upgrading successfully pls check the firmware final version: 2015-06-09 10:57:37 4: pls note the code "7788" is for open the BISS code source menu.