how to use: grab sptm, txm and a kernelcache. they're all in the preboot volume or just use ipsw extract --sptm and --kernel and then python3 proxyclient/tools/run_guest.py -l m4_`date +%Y%m%d-%H%M%S`.log --sptm-mode=emulation --sptm m4pro_sptm.b --txm m4pro_txm.b m4pro_kernelcache.b -S debug=0x14e serial=3 wdt=-1