You definitely have the 700-series zse44? The newest one is 800-series and is on f/w 2.00. But 1.30 would indeed be the latest for the 700-series version.
My technique involves some abundances of caution, but perhaps some or all of it will help...
- Make sure you have a copy of the GBL file on your desktop.
- Remove the GBL file (and any other files) out of Device Firmware Updater (DFU) and then remove DFU from your list of app (just using its own "Remove" button)
- Restart your hub -- just using the Restart option in Settings should be fine.
- Go to your Devices page and Disable (not remove!) the zse44 device -- this step is only applicable to battery devices, and although it should not be necessary, it is often helpful.
- Reinstall DFU and reload the GBL file in it.
- In a new tab, open up a Live Logs page.
- Have your zse44 opened up and ready to click its button... In your original (DFU) tab, start the firmware update and then immediately press the zse44 button 4x to wake it up.
- The update should progress pretty steadily -- you can monitor it on both the DFU page and the Live Logs page.
- When complete, re-enable the 44, since we disabled it in step 4.
- When everything's done & confirmed, I purge the update file out of DFU and then remove DFU from my apps. I just save the GBL file on my own system in case I need easy access to it again.
If the firmware update needs another attempt or if you need to update a different device, restart your hub in between updates.
Although the native DFU now works well with both LR and S2-mesh devices (as well as non-S2 mesh devices), my recent experience is that it gets VERY sluggish when attempting multiple updates without restarting in between each attempt.
ETA -- if DFU continues to be problematic for you, you can try this update path instead -- this is what I used for a long time before DFU recently got patched to work with S2 devices.
