ZBT Z8102AX OpenWrt 21.02 Firmware Review: Stable Enough, but Is It Future-Proof?
The ZBT Z8102AX runs a vendor-modified OpenWrt 21.02 build with kernel 5.4.246. In practical testing, the firmware worked successfully and kept the router stable for several days, but the old base raises important questions about security, modem control, upgrade paths and long-term maintainability.