Can not burn bootloader

[DL7JZ]

Hi, I have a (tr)uSDX from AliExpress Store "Up Tech Store". It's was in a bag with a serial number.

Under 9.7 FW I get 2.00x. After power on I did not a serial number.

If you don´t see your Serial Number on the Display after powering up your device, you either have a hardware defect, or there´s no Bootloader installed.

I follow the instruction to burn the bootloader, but it's not work for me.
There are an error message in the AVRDUDESS 2.17.

>>>: avrdude.exe -c avrisp -p m328p -P COM8 -b 19200 -e -U flash:w:"C:\Users\jzapf\Downloads\truSDX-initial_Bootloader.hex":a -U lfuse:w:0xFF:m -U hfuse:w:0xD6:m -U efuse:w:0xFD:m
avrdude: AVR device initialized and ready to accept instructions
avrdude: device signature = 0x7f7f7f
avrdude error: expected signature for ATmega328P is 1E 95 0F
double check chip or use -F to override this check

avrdude done. Thank you.

Can I overwrite the warning with -F Force option without bricking the device?

73 de DL7JZ

[DL2MAN]

A (tr)uSDX from "Up Tech Store" comes with pre-installed bootloader and firmware !
Only this way, they can print your serial number on the bag !

The instruction

Code: Select all

If you don´t see your Serial Number on the Display after powering up your device, you either have a hardware defect, or there´s no Bootloader installed.

is only valid, if you build your (tr)uSDX yourself from scratch, and need to install bootloader on a virgin AtMega.

If you have your serial number, simply proceed with installing firmware:
https://dl2man.de/3b-trusdx-firmware/
or
https://dl2man.de/wp-content/uploads/20 ... /beta.html

73 Manuel; DL2MAN

[DL7JZ]

Hi Manuel, in the second quote I have the error message of the avrdude.exe. I cannot replace any firmware.
The one from AliExpress goes back. The fact that it sometimes starts whistling during the CQ call is probably not intended. Some entries in the menu are also missing.

I will ask the newdiytech.com store how my call can be specified when ordering.

73 de DL7JZ, Jürgen