Zte Zxdsl 831aii Firmware -

| Version String | Region / ISP | Notable Changes | |----------------|-----------------------|------------------------------------------| | 6.1.0a_Z09 | China Telecom (early) | Bridge-only, no PPPoE client | | 7.2.5a_Z29 | Europe (e.g., O2, T-Online) | Added PPPoE routing, basic NAT | | 9.5.0a_Z29 | India (BSNL, MTNL) | Improved ADSL2+ stability, telnet enabled| | 10.2.3b_Z29 | Latin America (Claro) | Fixed ATM QoS, VLAN muxing | | 11.0.1a_Z09 | Southeast Asia | Security fixes (no more default telnet) |

Z09 vs Z29 – different bootloader parameters (memory map). Flashing the wrong region can brick. Zte Zxdsl 831aii Firmware

Random "firmware update" sites bundling malware. | Version String | Region / ISP |

: Locate the Maintenance tab in the left-hand menu and select Firmware Upgrade . T-Online) | Added PPPoE routing