Latest EC25AU firmware 2026

EC25AUFAR06A03M4G — latest firmware request (VoLTE/IMS registration fails on Telstra)

Hi,

Could you please send me the latest firmware for my module?

Current version (AT+QGMR): EC25AUFAR06A03M4G_01.001.01.001

I’m using this on Telstra (Australia, MCC/MNC 505/01) for VoLTE calling. IMS enables but never registers (AT+QCFG="ims"1,0), and calls fail with NO CARRIER / AT+CEER: 2,169. All Australian carriers have shut down 2G/3G, so VoLTE is the only voice path.

I’ve confirmed SIM, signal, network registration, correct MBN selection (Telstra-Commercial_VoLTE), and IMS APN/PDN activation are all healthy — this looks like it may need a firmware update to resolve, similar to this related case: EC25AUX VoLTE/IMS registration issue

Thanks in advance.

Dear Customer,

I have sent the latest firmware of EC25AU through email. Please check there and flash to the latest firmware. Please also help to update the result again after flashing to the latest firmware.