diff --git a/src/main/target/BETAFLIGHTF4/target.c b/src/main/target/BETAFLIGHTF4/target.c
index 7d30bf3bc7..b9d1c60759 100755
--- a/src/main/target/BETAFLIGHTF4/target.c
+++ b/src/main/target/BETAFLIGHTF4/target.c
@@ -25,15 +25,22 @@
 #include "drivers/timer_def.h"
 
 const timerHardware_t timerHardware[USABLE_TIMER_CHANNEL_COUNT] = {
+    DEF_TIM(TIM10, CH1, PB8, TIM_USE_PWM | TIM_USE_PPM, TIMER_OUTPUT_NONE, 0),  // PPM
 
-    DEF_TIM(TIM4, CH3, PB8, TIM_USE_PWM | TIM_USE_PPM, TIMER_OUTPUT_NONE, 0),  // PPM
+    // Motors
     DEF_TIM(TIM3,  CH3, PB0,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S1_OUT D1_ST7
     DEF_TIM(TIM3,  CH4, PB1,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S2_OUT D1_ST2
     DEF_TIM(TIM8,  CH4, PC9,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S3_OUT D1_ST6
     DEF_TIM(TIM8,  CH3, PC8,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S4_OUT D1_ST1
-    DEF_TIM(TIM1,  CH1, PA8,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S5_OUT
-    DEF_TIM(TIM3,  CH2, PA1,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // S6_OUT D1_ST2
-    DEF_TIM(TIM8,  CH1, PC6,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // UART6 TX Softserial Smartport
-    DEF_TIM(TIM8,  CH2, PC7,  TIM_USE_MOTOR, TIMER_OUTPUT_STANDARD, 0),  // UART6 RX
-    DEF_TIM(TIM4,  CH1, PB6,  TIM_USE_MOTOR | TIM_USE_LED, TIMER_OUTPUT_STANDARD, 0),  // LED
+
+    // LED strip
+    DEF_TIM(TIM4,  CH1, PB6,  TIM_USE_MOTOR | TIM_USE_LED, TIMER_OUTPUT_STANDARD, 0),  // D1_ST0
+
+    // UART Backdoors
+    DEF_TIM(TIM1,  CH2, PA9,  TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // TX1 Bidir
+    DEF_TIM(TIM1,  CH3, PA10, TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // RX1 Bidir
+    DEF_TIM(TIM5,  CH3, PA2,  TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // TX2 TX only
+    DEF_TIM(TIM9,  CH2, PA3,  TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // RX2 RX only
+    DEF_TIM(TIM2,  CH3, PB10, TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // TX3 Bidir
+    DEF_TIM(TIM2,  CH4, PB11, TIM_USE_NONE,  TIMER_OUTPUT_STANDARD, 0),  // RX3 Bidir
 };
diff --git a/src/main/target/BETAFLIGHTF4/target.h b/src/main/target/BETAFLIGHTF4/target.h
index 10b5168af8..c383ae0aaf 100755
--- a/src/main/target/BETAFLIGHTF4/target.h
+++ b/src/main/target/BETAFLIGHTF4/target.h
@@ -27,8 +27,8 @@
 // Leave beeper here but with none as io - so disabled unless mapped.
 #define BEEPER                  PB4
 
-// PC0 used as inverter select GPIO
-#define INVERTER_PIN_UART6      PC13
+// PC13 used as inverter select GPIO for UART2
+#define INVERTER_PIN_UART2      PC13
 
 #define MPU6000_CS_PIN          PA4
 #define MPU6000_SPI_INSTANCE    SPI1
@@ -90,10 +90,9 @@
 #define UART6_TX_PIN            PC6
 
 #define USE_SOFTSERIAL1
-#define SOFTSERIAL1_RX_PIN      PC7
-#define SOFTSERIAL1_TX_PIN      PC6
+#define USE_SOFTSERIAL2
 
-#define SERIAL_PORT_COUNT       6 //VCP, USART1, USART2, USART3, USART6
+#define SERIAL_PORT_COUNT       7 //VCP, USART1, USART2, USART3, USART6, SOFTSERIAL1, SOFTSERIAL2
 
 #define USE_ESCSERIAL
 #define ESCSERIAL_TIMER_TX_PIN  PB8 // (Hardware=0, PPM)
@@ -135,12 +134,11 @@
 
 #define USE_SERIAL_4WAY_BLHELI_INTERFACE
 
-#define TARGET_IO_PORTA         0xffff
-#define TARGET_IO_PORTB         0xffff
-#define TARGET_IO_PORTC         0xffff
-#define TARGET_IO_PORTD         (BIT(2))
+#define TARGET_IO_PORTA (0xffff & ~(BIT(14)|BIT(13)))
+#define TARGET_IO_PORTB (0xffff & ~(BIT(2)))
+#define TARGET_IO_PORTC (0xffff & ~(BIT(15)|BIT(14)))
+#define TARGET_IO_PORTD BIT(2)
 
+#define USABLE_TIMER_CHANNEL_COUNT 12
 
-#define USABLE_TIMER_CHANNEL_COUNT 10
-
-#define USED_TIMERS             ( TIM_N(1) | TIM_N(3) | TIM_N(4) | TIM_N(8) )
+#define USED_TIMERS             ( TIM_N(1) | TIM_N(2) | TIM_N(3) | TIM_N(4) | TIM_N(5) | TIM_N(8) | TIM_N(9) | TIM_N(10) )