ThinkCentre M60q Chromebox / M60q Chromebox Enterprise Hardware Maintenance Manual page 32 (pdf page 38) https://download.lenovo.com/pccbbs/thinkcentre_pdf/m60q_chromebox_hmm.pdf mentions jumper to disable write protection (use a screw to short the onboard R10 Write-Protect pads)
Edit: confirmed disabling WP with SuzyQable does work, but device is bricked after UEFI flash