The OpenTX Companion (with appropriate driver) can use this mode and can read and write OpenTX firmware to the radio. The FLASH is the non-volattile storage space where OpenTX firmware gets written. In this mode, with appropriate software, one can have a full control over the whole FLASH area of the Taranis radio. This mode should always work regardless of what the user has done/flashed to the radio. This is a good thing and means that Taranis radio can not be 'bricked'. It is a part of the 'silicon firmware' and can not be erased or damaged in any way. Mode 1: The factory installed STM32 DFU Bootloader This mode is built in into the STM32 CPU that is in the radio. If for whatever reason the Mode 2 is not working, then use other options (either Mode 1 or the methods that do not use the USB connection).

For the average user who wants to update firmware or edit models and settings from the OpenTX Companion the Mode 2 is recommended, because it should not require any additional drivers to be installed on the computer. Three modes of USB connection The Taranis radio has three ways of connecting to computer by USB port, each gives different end result.

Any other switch/trim combination - the OpenTX main firmware is started, this is the normal mode.

Both horizontal trim switches held inwards while the radio is switched on - the OpenTX Bootloader is run.

Which part of the radio firmware is invoked depends on the way the Taranis radio is powered on:

The second part is the OpenTX main radio firmware, which is placed right behind the first part.

Problem is that when I look into the device manager and plug in the second device again, also the second one (for which I did NOT change the driver) is listed as a libusbk device. Therefore, I have first installed the FTDI Serial Drivers, then unplugged one device and used the ZADIG tool to change the driver of the remaining adapter to libuskK. What I want to do is use one of the adapters with the 'standard' FTDI VCP Driver and the second adapter via libusk and python (libftdi). One of the adapters has an FT245R inside, the other one an FT232R (I see that by reading the device information with the FT_Prog tool from FTDI). I use two kinds of USB/Serial Adapters on the same PC (Windows 8 / Windows 10). I have found related questions on this topic, but not an answer to this specific question (at least none that is a solution).

Zadig windows 10 taranis which driver