http://s3.amazonaws.com/s3.image.ro/download/Software/Radioddity/GD-77/GD-77%20Firmware%20V3.1.1%20and%20Software%20V3.1.1.zip
Firmware and software V3.1.1
1：RX Group List – Contact 16 → Contact 32
2：RX Group List 128→ 76
3：ADD Scan Time Setting
4：VFO Bug Repair