Here is the download with the 1.0 firmware and update tool.It is the same as microchip distributed at the workshop and will no doubt upload to their support site soon. I added the .hex binary firmware file and made a .pdf of the word document and included them both in the one update.
Follow the LoRa_FirmwareUpdate_viaGUI Word/PDF document closely because the workshop slides said to click the bootmode button in the gui and this misleading even though it is intuitive. As per the word document you only use the bootmode button if the device has been erased ie it is a recovery mode. Assumedly because if the device firmware is erased either by command or a failed update then it no longer has an soft reset mode and needs to use a different sequence to initialise into bootmode. Anyhow ALOT of the trouble people had at the workshop was they had clicked the bootmode button so don't..
The other thing is I have only tested this on a microchip RN2483 PICTail and microchip Mote. These both have the microchip USB:Serial converters. I am assuming the GUI Update tool works with the generic USB port and so will work with any USB : UART connected to a RN2483 but I haven't tested that.
If you are using an TTN UNO I imagine you will need to create serial pass-through program which pipes between Serial and Serial 1. Hopefully this doesn't mess with the bootloader timing so you might need to write a tight bit-bang pass-through if it does. I haven't tested this either.
FInally the FirmwareUpdate program is written in java and requires java 8 to run. It is the executeable jar ( Lora.jar ) in the root folder of the download. You should be able to double click it to run it you may have to launch it from a command line session using java. eg > java lora.jar
The RN2483_Parser.X.production.Bootloader.hex in the download is the firmware you should use. This is the 1.0 firmware for the RN2483 You need to select it as the firmware file. Also you should use 19200 as the baud. - see the word/pdf guide
Did I mention follow the guide?