Firmware

AM32 Bootloader Firmware

The ARK 4IN1 uses AM32_F051_BOOTLOADER_PB4. You can find the latest release here.

10KB

AM32_F051_BOOTLOADER_PB4_V15.hex

AM32 App Firmware

Use the latest release of AM32.

60KB

AM32_ARK_4IN1_F051_2.19.hex

Low KV Large Prop Systems

For low KV motors and large props, use the ARK_4IN1_RAMP_F051 firmware which increases the maximum 0-100% ramp time to 200ms. When flashing back and forth from the standard ARK_4IN1 firmware, select "Ignore current MCU layout".

60KB

AM32_ARK_4IN1_RAMP_F051_2.19.hex