I managed to revive a M2 Max that was bricked by upgrading to 26.4.1. Downloaded the 26.3.1 IPSW and did a DFU revive and the machine successfully got revived. And to also help me boot into DFU, I used this tool from Asahi to remotely trigger DFU over USB: https://github.com/AsahiLinux/macvdmtool