New firmware update for M3i Zero GMP-Z003 and old model has been released for 3DS Japan version .Whether support US and EU version need to be confirmed later.

M3i Zero F Core 1.7.2
Source- handheldsources

1. All machines are upgradable: even your machine has already been in firmware 1.4.1. And no need to find another bootable machine to perform the upgrading process.
2. risk-free: flash card will not be damaged even the upgrading process is not successfully.
3. fast and easy to update
just plug in the "programming cable" and wait for about 30sec.