problem with lora_pkt_fwd in release v2.1.0 not pasring when MCU version V01.00.00 dfu-util Error during special command "ERASE_PAGE" get_s

[techsd]

when update from v2.0.2 to v2.1.0 not pasring lora_pkt_fwd when MCU version V01.00.00
./boot -d /dev/ttyACM0
INFO: Configuring TTY
INFO: Flushing TTY
INFO: Setting TTY in blocking mode
INFO: Connect to MCU
WARNING: MCU version mismatch (expected:00.02.06, got:V01.00.00)
INFO: Concentrator MCU version is V01.00.00
INFO: MCU status: sys_time:5025778 temperature:29.0oC
INFO: The concentrator is in DFU mode, the MCU can be programmed

when do downgrade, i have problem : Error during special command "ERASE_PAGE" get_s
dfu-util -a 0 -s 0x08000000:leave -t 0 -D "/home/pi/sx1302_hal/mcu_bin/rlz_000206_CoreCell_USB.bin"
dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 0483:df11
Run-time device DFU version 011a
Claiming USB DFU Interface...
Setting Alternate Setting #0 ...
Determining device status: state = dfuERROR, status = 10
dfuERROR, clearing status
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 011a
Device returned transfer size 2048
DfuSe interface name: "Internal Flash "
Downloading to address = 0x08000000, size = 35672
Download [=========== ] 45% 16384 bytesdfu-util: Error during special command "ERASE_PAGE" get_s

and then
"/home/pi/sx1302_hal/bin/boot" -d /dev/ttyACM0
ERROR: failed to open COM port /dev/ttyACM0 - No such file or directory
ERROR: failed to open USB on /dev/ttyACM0

later i am try JTAG

[chungwinfoong]

hey i am facing the same issue at the moment. just wondering if you'd any luck with reflashing via the JTAG SWD pins?