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FAQ
When I install the HD1 software/firmware, it shows a virus. What should I do?

How do I adjust the screen backlight to make it brighter on the HD1

Retevis RT83: The display screen shows incomplete information

Retevis RT2: How to open the fm broadcast?

Retevis RT2: How to save and delete channels?

How to reset the Retevis RT35?

Retevis H777: How to open the scan?

Retevis H777: How to turn on/off the voice announcer

How Retevis H777 to switch English and Chinese?

How to switch between single band and dual band standby?

How to Reset the Retevis RT87?

My RT3S screen shows like snow white, what should I do?

Where can I download the contacts list for Retevis RT3S

How can I upgrade Retevis RT82?

How can I upgrade Retevis RT3S?

How can I switch FM to DMR via HD1 keypad?

Does HD1 Support Cross-Band Repeater Function?

What's the difference between dual receive and dual standby?

Where can I download the HD1 contacts?

Does anyone have any experience with this model Ailunce HD1?

How to make RT82 enter into DFU mode?

My RT82 screen shows like snow white, what should I do?

How can I make HD1 show Channel name

Does Ailunce HD1 Support DTMF?

How to upgrade HD1 firmware