The new version of Ailunce HS2 is public, and it can't upgrade the firmware of the first version in the same way. Let's see how to upgrade the firmware of the new version of Ailunce HS2.
New version Ailunce HS2*1,
Power supply equipment*1,
U flash disk*1
PS： Please use the U flash disk in the package. if yours in the package is abnormal, please select the capacity of the U flash disk to be below 4G.
2. Use the Power cord to connect the HS2 and Power supply equipment, and provide 13.8V DC voltage to HS2.
3. Download the new version firmware of Ailunce HS2 as below.
4. Find the .bin file, and put it into the U flash disk. PS: please make sure there is only one .bin file in the U flash disk.
5. Insert the U flash disk with the .bin file that you want to upgrade, then power on the HS2. the radio will prompt the update progress as below.