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Looks like they switched it around in 2.2. 2.1 was using ram. I don't know the reasoning for it.

Edit: looks like it was introduced as a new version of bootloader with support for the Horus for flashing firmware via usb or sd card.

Interesting.. I had a look at the linker files for both projects and yes, I can see that the ersky9x bootloader gets moved to ram after initial start if required via loadboot while opentx runs its own bootloader from flash. It is kinda cool how it's done that either way, both bootloaders will work w...

Hi Mike, just posting some thoughts on a future app possibility. I currently use your bootloader on all my radios, even on my taranis 9xdplus which uses opentx 2.2.1 since I do like the ability to flash my multiprotocol modules and the sport id change capability. Great concept!! Only thing that I mi...

Tks folks. That's good to know. Interesting that the original OrangeTX code uses the second switch to allow changing the unique ID. I don't know if the odds of conflicting with some else warrants having the same functionality with the DIY code or if the ID is random enough to make those odds very sl...

1. The bootloader goes into the flash. The XMEGA, has an extra 4K of flash specifically for a bootloader (36K flash in total). 2. Lock bits should be 0xFF (nothing locked). Fuse 2 should have the 0x40 bit cleared to 0. 3. The "bottom" pin is the one with the extra wire connected to it. Th...

FTDI works ok using a 5 volt device and avrdude for me. I used a Taranis x9d plus with Mike's recommended PDI programming connections and ERsky with the PDI addon's. At first I was trying to power from the module bay, but the taranis does not power up the module unless it's ready and selected in a m...