Hello,

can you find a firmware update for Axpert VM III TWIN 4000W Inverter Off-Grid Inverter?

VMIII TWIN_Ver60.04

VM_III_Twin_60_89.zip VM TWIN (III & IV) DSP 70.00 hex.zip

3 hours ago, falahaboamar said:

VMIII TWIN_Ver60.04

<font style="vertical-align: inherit;"><font style="vertical-align: inherit;">VM_III_Twin_60_89.zip</font></font> <font style="vertical-align: inherit;"><font style="vertical-align: inherit;">VM TWIN (III & IV) DSP 70.00 hex.zip</font></font>

thanks

Why are there two files?

Edited March 14, 20251 yr by ala syria

14 hours ago, ala syria said:

Why are there two files?

These would be alternatives. VM III and VM IV firmwares are a big mess. It seems to be possible to intermix VM III and VM IV firmwares, though I'm suspicious about that.

There are also 56.xx, 60.xx, and 70.xx firmwares, just for the Twin models.

The latest in the 56.xx series is 56.72, available here.

The latest in the 60.xx series is actually 60.10, which may have fixed the "stuck at 60V" issue, according to this post.