Here is SV4000_SysCleanFile to clean out the old code, please follow the instruction properly to clean out old code.
This is not necessary for those who's not being affected by glitch/bug.

Instruction:

1. Factory Reset (using Menu-Installation)
2. Format USB device (make sure it USB 2.0 compatible)
3. Extract SV4000_SysCleanFile.zip to a folder
4. Copy file SV4000_SysCleanFile.bin onto the USB device
5. Insert USB device into the STB USB port and start the flash update
6 Once the update completed, you can flash with the latest update and do dish setting/sat scan.

Sonicview 4000 SysCleanFile.zip