Hello Berton.Peng,
Power up reports $GPTXT,L89NR01A04V02*22
To upgrade to R01A06, could you kindly provide more details on what tool or tools to use and what bin files to use? Your downloads have two tools. FlashTool_exe_v4.1.0 and STA808x-9x Firmware Upgrade.exe and two bin files. L89NR01A06_BOOT26.bin and L89NR01A06_UPG26.bin. What tool do I use and what bin file? Or do both bin files get loaded at different addresses?
I have the L89 connected to a Windows PC at 115200 baud with an FTDI USB to Serial adapter.
Thanks!