Hi, our company bought two SIMtrace Hardware Kits. We want to use SIM forwarder <https://github.com/kamwar/simlabTrace/wiki/res/bin/sim_forwarder-simtrace-at91sam7s128-flash_dfu.bin> firmware in our project. but have problem with flashing it to the board. in one way I installed toolchain as described at http://osmocom.org/projects/baseband/wiki/GnuArmToolchain and made forwarder firmware - success1. but any tries to flash it using dfu-util failed. tries was next: -------------------------- - from windows10 host using steps from https://github.com/kiibohd/controller/wiki/Loading-DFU-Firmware#windows - kii-dfu can`t flash it due to three dfu devices with NO serial numbers. Try using dfu-util with -a0 flag gives same result as later cases - DFU found, state idle, activate alternative=0 ... and nothing more. reruns not helps. reconnects with or w/o BOOTLOADER button gives same result - nothing. --------------------- - same win10 host with vmWare Ubuntu16.04 VM. tries to install using ubuntu. device shown on lsusb - dfu mode on. dfu-utils installed, toolchain too, firmware made OK. simtrace made too. BUG1 experiment with simtrace gives output with wrong parsing of commands - may be you have to open bug case to resolve it. same results with usb2 on vm and usb3. all tries to flash forwarder or reader to board failed on same place as before. tried with button at connect and using -ao and w/o button and using -i param (forgot number of interface for apps partition mb was -i1 ) - failed - pure ubuntu 16.04 host. all above with same results. using usb3 port and usb2 extender. -------------------------------- Now the time to tell about second way - SAM-BA . here is another problem: used http://osmocom.org/projects/simtrace/wiki/SIMtrace_Firmware installed GnuArmToolchain <http://osmocom.org/projects/baseband/wiki/GnuArmToolchain>. as described on toolchain <http://osmocom.org/projects/baseband/wiki/Toolchain> link, included to PATH. Trying to do: git clone git://git.osmocom.org/openpcd.git cd openpcd/firmware make -f Makefile.dfu BOARD=SIMTRACE make BOARD=SIMTRACE DEBUG=1 TARGET=main_simtrace cat dfu.bin main_simtrace.bin > main_simtrace.samba cd ../.. failed on 3rd string: make -f Makefile.dfu BOARD=SIMTRACE - arm-elf-gcc not found! tries to rename arm-none-eabi gcc to arm-elf-gcc was not successful. so I cant produce your dfu.bin to use samba (I made it with success) with cat dfu.bin my_forwarder.bin > my_forwarder.samba Also, at the string cat dfu.bin main_simtrace.bin > main_simtrace.samba we see dfu.bin which is possibly dfu-boot-loader with wrong name which crashes brain of google so we have a BUG2: - to rename produced dfu.bin filename to something relative i.e. dfu-boot-loader-arm-SAM7.bin - to place link to binary of loader(s) at your instructions. installed also crosstool-ng - but arm-elf-gcc not found too So, we have fails using dfu-util and unmaking state of firmware which gives use of SAM-BA impossible due to insufficient dfu-boot-loader-arm-SAM7.bin aka dfu-bin. This situation looks like failed "smoke test"... Please help me to solve these issues. Regards, Alexandr -- https://L-in-K.com/147a258u369