deconz Raspbee II stopped working

[haegar33]

Out of nowhere my complete z2m installation on a Raspberry Pi 3 broke down. I am using for 3 years now a Raspbee II adapter on /dev/serial1 but since last week the serial port seem no longer responding:

[2025-01-12 17:15:57] debug: 	zh:deconz:driver: Opening with /dev/serial1
[2025-01-12 17:15:57] debug: 	zh:deconz:driver: Serialport opened
[2025-01-12 17:15:57] debug: 	zh:deconz:driver: send read parameter request from queue. seqNr: 1 paramId: 5
[2025-01-12 17:16:07] debug: 	zh:deconz:driver: Timeout for request - CMD: 0xa seqNr: 1
[2025-01-12 17:16:07] error: 	z2m: Error while starting zigbee-herdsman
[2025-01-12 17:16:07] error: 	z2m: Failed to start zigbee-herdsman
[2025-01-12 17:16:07] error: 	z2m: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start_crashes-runtime.html for possible solutions
[2025-01-12 17:16:07] error: 	z2m: Exiting...
[2025-01-12 17:16:08] error: 	z2m: Error: TIMEOUT
    at Driver.processBusyQueue (/opt/zigbee2mqtt/node_modules/.pnpm/zigbee-herdsman@3.2.1/node_modules/zigbee-herdsman/src/adapter/deconz/driver/driver.ts:508:28)
    at Timeout._onTimeout (/opt/zigbee2mqtt/node_modules/.pnpm/zigbee-herdsman@3.2.1/node_modules/zigbee-herdsman/src/adapter/deconz/driver/driver.ts:160:46)
    at listOnTimeout (node:internal/timers:569:17)
    at processTimers (node:internal/timers:512:7)

/opt/zigbee2mqtt/node_modules/.pnpm/readable-stream@3.6.2/node_modules/readable-stream/lib/_stream_writable.js:264
  var er = new ERR_STREAM_WRITE_AFTER_END();
           ^
Error: write after end
    at writeAfterEnd (/opt/zigbee2mqtt/node_modules/.pnpm/readable-stream@3.6.2/node_modules/readable-stream/lib/_stream_writable.js:264:12)
    at DerivedLogger.Writable.write (/opt/zigbee2mqtt/node_modules/.pnpm/readable-stream@3.6.2/node_modules/readable-stream/lib/_stream_writable.js:300:21)
    at DerivedLogger.log (/opt/zigbee2mqtt/node_modules/.pnpm/winston@3.17.0/node_modules/winston/lib/winston/logger.js:231:12)
    at Logger.log (/opt/zigbee2mqtt/lib/util/logger.ts:198:25)
    at Logger.debug (/opt/zigbee2mqtt/lib/util/logger.ts:219:14)
    at Driver.processQueue (/opt/zigbee2mqtt/node_modules/.pnpm/zigbee-herdsman@3.2.1/node_modules/zigbee-herdsman/src/adapter/deconz/driver/driver.ts:477:28)
    at Timeout._onTimeout (/opt/zigbee2mqtt/node_modules/.pnpm/zigbee-herdsman@3.2.1/node_modules/zigbee-herdsman/src/adapter/deconz/driver/driver.ts:155:22)
    at listOnTimeout (node:internal/timers:569:17)
    at processTimers (node:internal/timers:512:7)

This a on a re-install of the latest Z2M Version 2.

• could this be related to occasional under voltage events?
• is there any low level script to test the basic handshake to see whether the adapter is broken?
• should I revert back to the previous Z2M V1.41 which was working before?