Can't flash : Synch (0x55 0x55) error

[gbetous]

Hi !

I still have the "Synch Issue" even after trying aroud ten times.

• My Zigbee Bridge Pro is successfuly flashed under ESPHome : I see it and can interact with it
• Version: zb-pro-version 2023.12.5
• When I switch the "zb-bridge-pro fw update" switch, the LED goes green
• I run sudo python3 cc2538-bsl.py -p socket://192.168.3.35:6638 -b 460800 -evw ../firmware/CC1352P2_CC2652P_launchpad_coordinator_20230507.hex
• When I run the script, the status "Connected from PC" is connected
• But nothing happens, until the Synch issue
• I try to run again the command but same issue
• Then the ZBBridge switch back to Blue LED, and "Connected from PC" switch to not connected

I tried to reflash it, to reboot it... no success

Any idea ?

Thanks !

[haade-administrator]

hello click on fw switch after reboot and run script, if it's not good relaunch switch many times + script

[agios]

Hi! Can this also be done over serial? I have now tried more than 100 times with the same message. The switch is working, light turns green, I see the connection in the logs, but no luck.

Log output

``` [12:49:57][D][switch:012]: 'zb-bridge-livingroom fw update' Turning ON. [12:49:57][D][light:036]: 'Blue' Setting: [12:49:57][D][light:047]: State: OFF [12:49:57][D][status_led:050]: 'Blue': Setting state OFF [12:49:58][D][switch:012]: 'Zigbee BSL' Turning ON. [12:49:58][D][switch:055]: 'Zigbee BSL': Sending state ON [12:49:59][D][switch:012]: 'Zigbee RST' Turning ON. [12:49:59][D][switch:055]: 'Zigbee RST': Sending state ON [12:50:00][D][switch:016]: 'Zigbee RST' Turning OFF. [12:50:00][D][switch:055]: 'Zigbee RST': Sending state OFF [12:50:00][D][main:054]: wait for fw update [12:50:06][D][stream_server:081]: New client connected from 10.1.20.202 [12:50:06][D][binary_sensor:036]: 'Connected from PC': Sending state ON [12:50:12][D][light:036]: 'Green' Setting: [12:50:12][D][light:047]: State: ON [12:50:12][D][switch:016]: 'Zigbee BSL' Turning OFF. [12:50:12][D][switch:055]: 'Zigbee BSL': Sending state OFF [12:50:12][D][main:064]: please try to write fw on ip:6638, if a error of Timeout waiting for ACK/NACK after 'Synch (0x55 0x55)' repeat with fw update [12:50:17][D][stream_server:163]: Client 10.1.20.202 disconnected [12:50:17][D][binary_sensor:036]: 'Connected from PC': Sending state OFF ```