Jim,
If Xloader just sits there, there are two possible reasons.
1. Most likely is that it is really the old bootloader and you need to set the baud rate to 57600. If you have the Arduino IDE installed, you can open up the "blink" example and see whether you can download it to the nano by either selecting old or new bootloader.
2. The selected device?in XLoader is set wrong. You want Duemilanove/Nano(ATmega328)
Or it is a dead nano...? ?I assume you tried on all three? No reason to solder the pins, just see if XLoader can download anything to the Nano.? The other thing I have recently seen is that there are multiple source code repositories calling them "XLoader". When I tried using XLoader on a new Windows laptop, I had installed the wrong one and had to go figure out which is the one I should be using.?
Can you download CEC 1.2 to the Nano? If not, then it is definitely either a XLoader config issue or a bad nano.
How did you figure that it was ok at 115200??
73
Mark
AJ6CU
KD8CEC 2.0, Nextion Screens,? and open source uBITX Raduino boards for Arduino IOT, BLE, RP2040, Teensy 4.0, and Raspberry Pi Pico
https://github.com/aj6cu
