I figured since 122 is basically done, I'll release a debranded or unofficial build while I'm still trying to figure out branding. Let me know what bugs or issues you encounter with it.
Works on Windows 7+ natively
Does not work on XP or Vista stock.
Does not work on Vista Extended Kernel.
Works on XP with One Core API with these environment variables set:
MOZ_DISABLE_CONTENT_SANDBOX=1
MOZ_DISABLE_GMP_SANDBOX=1
MOZ_DISABLE_GPU_SANDBOX=1
MOZ_DISABLE_NPAPI_SANDBOX=1
MOZ_DISABLE_RDD_SANDBOX=1
MOZ_DISABLE_SOCKET_PROCESS_SANDBOX=1