Hello Realtek Team,
We are trying to flash an AMB82-Mini (RTL8735B, NOR flash) using the AmebaPro2
SDK and PG Tool v1.4.3.
The chip erase works successfully every time, but programming always reaches
100% and then fails:
programing done.
fail for download 0
download fail
Setup:
Board : AMB82-Mini / RTL8735B
USB-Serial : CH340
SDK : ameba-rtos-pro2
Tool : Pro2_PG_tool_v1.4.3
Image : flash_ntz.bin (4,956,160 bytes)
boot_recover.bin, flash_loader_nor.bin and flash_control_info.bin are present in
the same folder as the tool.
We have tried different baud rates, block sizes, offsets, images and programming
options, including both the full firmware image and smaller firmware files. In
every case programming reaches 100% and then fails with the same “fail for
download 0” message. Chip erase continues to work successfully, and the device
enters UART download mode normally afterward.
Could you please advise what might be wrong in our flashing procedure, and what
the correct procedure/command is to successfully program this board?
We first raised this with Realtek support by email and were directed to post here.
Snapshots of the flashing process and error output are attached for reference.
Thanks.