Upgrade firmware and upgrade methods corresponding to different hardware versions of AT9, AT9S, AT9S Pro
Model AT9 AT9S AT9S Pro
Hardware
Version		 V1.0 V2.0 V3.0 V3.1 V3.2
How to check the version of the hardware The hardware version can be viewed on the PCB board at the battery socket of the remote control.
Note: The hardware whose version number is painted with white glue at the power pin is also the latest V3.2.
Communication Technology DSSS DSSS&FHSS
16 channels pseudo-random frequency hopping		 Using the proprietary communication technology of RadioLink DSSS and FHSS hybrid spread spectrum, as a foundation, we have added the CRSF* protocol from the TBS. AT9S Pro is compatible with TBS Crossfire and ExpressLRS.
Upgrade Firmware AT9, AT9S, and AT9S Pro, which hardware is V1.0, V2.0, V3.0, and V3.1, are compatible with the same upgrade firmware. The upgrade firmware is in DFU format. The firmware is in MAC format.
How to upgrade firmware AT9, AT9S, and AT9S Pro, which hardware is V1.0, V2.0, V3.0, and V3.1, are upgraded in the same way. And, it needs to be upgraded with a dedicated APP. U disk mode upgrade, the upgrade is simpler
Note1 AT9S and AT9 CANNOT support CRSF protocol by upgrading firmware. If you want to AT9S or AT9 use with the TBS crossfire, only SBUS or PPM signal can be selected. https://youtu.be/9h-B1YfdI50
Note2 AT9S Pro, which hardware is V3.0 or V3.1, is compatible with the same upgrade firmware. But, can not upgrade the firmware which is compatible with the AT9S Pro V3.2.


AT9S Pro Firmware

(Please upgrade by Windows 7,8,10,11 or XP computer, cannot upgrade by Apple MAC computer)



1. Firmware upgrade for AT9S Pro with V3.2 hardware

(1) New system version: the latest firmware version: V614S

Upgrade Instructions
1. The system is upgraded to the mainstream embedded system freeRTOS+emWin, which brings a new user experience. The biggest changes in the new system are three points: first, the interface is more beautiful, second, the operation is smoother, and third, the functions are more complete.
2. Add multi-language.


Attention

1. After upgrading to the following new firmware, all data under the previous old firmware model will be cleared and overwritten, and there is no way to save the data and import it into the new firmware. Please choose whether to upgrade according to the upgrade content.

2. After the remote controller has been upgraded to the new firmware, the joystick and four knobs need to be calibrated.

3. If you want to upgrade to the previous firmware after upgrading to the latest firmware,  AT9S Pro currently only supports upgrading back to V2.4.6AT firmware.

4. The latest firmware of the new system and V2.4.6AT firmware can replace each other, but after each upgrade, all the set data will be reset.

(2) Old system version: the latest firmware version: V2.4.5T.mac


Attention:

Factory reset must be set after upgrading the V2.4.5T firmware no matter which model has been selected.

Where is the factory reset setting of AT9S/AT9S Pro: enter BASIC MENU- MODEL TYPE- RESET: Execute. But please note the reset is only for this type. If you want to reset all settings, you need to reset every type.

If the AT9S Pro connects TBS crossfire: please select OUT: CRSF1(the baud rate is 115200) or OUT: CRSF4(the baud rate is 416000) in the SYSTEM menu. If the AT9S Pro connects ExpressLRS: please select OUT: ELRS1(the baud rate is 115200) or OUT: ELRS4(the baud rate is 416000) in the SYSTEM menu. ELRS1/ELRS4 only support 50HZ/500HZ now. Please reboot the transmitter after selecting the protocol.



How to Update the Firmware of AT9S Pro with V3.2 Hardware?

WinZip(design by 360, free)

If you have not WinZip Tools to decompressing upgrade files, please click to download and install the free WinZip Tool designed by 360.

2. Firmware upgrade for AT9S Pro/AT9S/AT9 with V1.0/V2.0/V3.0/V3.1 hardware

The Latest Firmware Version: V2.4.5a.dfu


About this update:

① AT9S Pro is compatible with ExpressLRS except for TBS crossfire.

② If the AT9S Pro connect TBS crossfire: please select OUT:CRSF1(the baud rate is 115200) or OUT:CRSF4(the baud rate is 416000) in SYSTEM menu. If the AT9S Pro connects ExpressLRS: please select OUT: ELRS1(the baud rate is 115200) or OUT: ELRS4(the baud rate is 416000) in the SYSTEM menu. ELRS1/ELRS4 only support 50HZ/500HZ now. Please reboot the transmitter after selecting the protocol.

③ Add Vertical Mode in the ATTITUDE menu, you can check all the flight modes when using the Byme-A flight controller.

④ The time for LockScreen is changed from 1 second~255 seconds to 20 seconds~250 seconds and channel 3 (throttle channel) is default reverse even resetting the transmitter.


Attention:

① Please check the stick mode in the PARAMETER menu after you have upgraded to the latest firmware.

② This firmware applicable to AT9S Pro, AT9S and AT9. But AT9S and AT9 cannot support CRSF protocol by upgrading firmware. If you want to AT9S or AT9 use with the TBS crossfire, only the PPM signal can be selected.


If you can not download the files when clicked above or zip file below, please click the website below to download the files you need.  

http://www.radiolink.com.cn/firmware/transmitter/AT9SPro&AT9S&AT9/



How to upgrade firmware for V1.0/V2.0/V3.0/V3.1 Hardware of AT9S Pro/AT9S/AT9

Download and install the driver and upgrade tool when the first update