Cannot perform NVM Backup on ZST10 500 Series

[murkumurdok]

Checklist

• I am not using Home Assistant. Or: a developer has told me to come here.
• I have checked the troubleshooting section and my problem is not described there.
• I have read the changelog and my problem is not mentioned there.

Deploy method

Home Assistant Add-on

Z-Wave JS UI version

11.8.2

ZwaveJS version

15.17.1

Describe the bug

I want to perform an NVM backup of my ZST10 500 series usb-stick to upgrade to the ZWA-2. I have followed the migration guide and confirmed that the SDK on my ZST10 is newer than 6.61 (sdkVersion 6.81.3). However, when I press NVM Backup through zwavejsui, no file is downloaded and I have the below logs in the debug logger.

z-ui_2025-12-03.log

2025-12-03 22:55:53.431 INFO Z-WAVE: Calling api backupNVMRaw with args: [ [length]: 0 ] 2025-12-03 22:55:53.432 CNTRLR Backing up NVM... 2025-12-03 22:55:53.432 CNTRLR Turning RF off... 2025-12-03 22:55:53.433 DRIVER one or more queues busy 2025-12-03 22:55:53.433 DRIVER » [REQ] [SetRFReceiveMode] enabled: false 2025-12-03 22:55:53.433 SERIAL » 0x0104001000eb (6 bytes) 2025-12-03 22:55:53.435 SERIAL « [ACK] (0x06) 2025-12-03 22:55:53.441 SERIAL « 0x0104011001eb (6 bytes) 2025-12-03 22:55:53.442 SERIAL » [ACK] (0x06) 2025-12-03 22:55:53.443 DRIVER « [RES] [SetRFReceiveMode] success: true 2025-12-03 22:55:53.443 CNTRLR Stopping hardware watchdog... 2025-12-03 22:55:53.444 DRIVER » [REQ] [StopWatchdog] 2025-12-03 22:55:53.445 SERIAL » 0x010300d32f (5 bytes) 2025-12-03 22:55:53.450 DRIVER » [REQ] [GetNVMId] 2025-12-03 22:55:53.451 SERIAL » 0x01030029d5 (5 bytes) 2025-12-03 22:55:53.452 SERIAL « [ACK] (0x06) 2025-12-03 22:55:53.453 SERIAL « [ACK] (0x06) 2025-12-03 22:55:53.462 SERIAL « 0x01070129031f81125f (9 bytes) 2025-12-03 22:55:53.463 SERIAL » [ACK] (0x06) 2025-12-03 22:55:53.464 DRIVER « [RES] [GetNVMId] manufacturer: 0x1f memory type: DataFlash memory size: 256KB 2025-12-03 22:55:53.464 DRIVER » [REQ] [ExtNVMReadLongBuffer] offset: 0x00 length: 65535 2025-12-03 22:55:53.464 SERIAL » 0x0108002a000000ffffdd (10 bytes) 2025-12-03 22:55:53.467 SERIAL « [ACK] (0x06) 2025-12-03 22:55:56.683 SERIAL « 0x01ab012a38262fd046524545ec6562ecffffffff000000000054a50000000000 (173 bytes) 000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000001ab012a38262fd046524545ec6562ecffffffff000000000054a500000000 000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000001ab012a38262fd046524545ec6562 2025-12-03 22:55:56.684 DRIVER Dropping message because it contains invalid data 2025-12-03 22:55:56.685 SERIAL » [NAK] (0x15) 2025-12-03 22:55:56.686 SERIAL « [DISCARDED] invalid data 0xecffffffff000000000054a50000000000000000 (65 bytes) 000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000 2025-12-03 22:56:03.468 CNTRLR Turning RF on... 2025-12-03 22:56:03.469 DRIVER » [REQ] [SetRFReceiveMode] enabled: true 2025-12-03 22:56:03.469 SERIAL » 0x0104001001ea (6 bytes) 2025-12-03 22:56:05.070 DRIVER » [REQ] [SetRFReceiveMode] enabled: true 2025-12-03 22:56:05.070 SERIAL » 0x0104001001ea (6 bytes) 2025-12-03 22:56:06.672 DRIVER » [REQ] [SetRFReceiveMode] enabled: true 2025-12-03 22:56:06.672 SERIAL » 0x0104001001ea (6 bytes) 2025-12-03 22:56:08.273 DRIVER Attempting to recover unresponsive controller by reopening the serial port... 2025-12-03 22:56:08.274 DRIVER all queues idle 2025-12-03 22:56:09.528 DRIVER Serial port reopened. Returning to normal operation and hoping for the best... 2025-12-03 22:56:09.573 INFO APP: ::ffff:127.0.0.1 GET /health/zwave 301 162 - 0.331 ms 2025-12-03 22:56:13.275 DRIVER one or more queues busy 2025-12-03 22:56:13.276 DRIVER » [REQ] [GetBackgroundRSSI] 2025-12-03 22:56:13.276 SERIAL » 0x0103003bc7 (5 bytes) 2025-12-03 22:56:13.278 SERIAL « [ACK] (0x06) 2025-12-03 22:56:13.283 SERIAL « 0x0105013ba87d15 (7 bytes) 2025-12-03 22:56:13.284 SERIAL » [ACK] (0x06) 2025-12-03 22:56:13.284 DRIVER « [RES] [GetBackgroundRSSI] channel 0: -88 dBm channel 1: No signal detected 2025-12-03 22:56:13.285 DRIVER all queues idle 2025-12-03 22:56:39.604 INFO APP: ::ffff:127.0.0.1 GET /health/zwave 301 162 - 0.412 ms

To Reproduce

Trigger an NVM backup from ZwaveJSui

Expected behavior

I expect a backup to complete and download

Additional context