diff --git a/docs/boards/Board - AikonF4.md b/docs/boards/Board - AikonF4.md
index 181d5e8c2..f6ba9874f 100644
--- a/docs/boards/Board - AikonF4.md	
+++ b/docs/boards/Board - AikonF4.md	
@@ -7,7 +7,7 @@ FC with no PDB aimed at multi-rotor and fixed wing use, Aikon F4 features a care
 
 ### Hardware
   - MCU: STM32F405
-  - IMU: MPU-6000 or ICM-20602 depending on revision
+  - IMU: ICM-20602
   - Motor outputs: 4-6
   - IMU Interrupt: Yes
   - BARO: Optionally
@@ -15,13 +15,15 @@ FC with no PDB aimed at multi-rotor and fixed wing use, Aikon F4 features a care
   - Hardware UARTS: UART1 for SerialRX, UART3 for Inverted SmartPort, UART2 and UART4 available for general use
   - Software serial: SOFTSERIAL1 for VTX control (shared with UART1TX), SOFTSERIAL2 for ESC telemetry (shared with UART4RX)
   - OSD: Yes
-  - Blackbox: SPI 16MB or 32MB depending on revision
+  - Blackbox: SPI 16MB
   - PPM/LED_STRIP Shared: Yes
   - Battery Voltage Sensor: Yes
   - Integrated Voltage Regulator: Yes
   - Buttons: Boot
 
 ### Features
+UART3 inverter is controllable by software, you can use the SBUS pad for any unidirectional protocol by setting `serialrx_inverted` accordingly. There's also a solder-jumper to bypass the inverter and connecto UART3_RX to `DSMX` pad directly.
+
 Software serial is preconfigured by default, all you have to do is enable SOFTSERIAL1 for VTX control and SOFTSERIAL2 for ESC sensor on the Ports tab in Configurator.
 
 ## Manufacturers and Distributors
@@ -43,4 +45,4 @@ Andrey Mironov (@DieHertz)
 * First revision has no diode protecting the 5V input on the 11-pin ESC connector, make sure to pull the 5V wire coming from our ESC in order to avoid two regulators fighting against each other
 * First revision has RX4 (ESC Telemetry) and GND pad silkscreen swapped near motor outputs
 ![Aikon F4 top](aikon-f4-rev1-top.jpg)
-![Aikon F4 bottom](aikon-f4-rev1-bottom.jpg)
\ No newline at end of file
+![Aikon F4 bottom](aikon-f4-rev1-bottom.jpg)