Jailbreak.sh fails after "Sending iBSS and iBEC"

[Deadshot23610]

When I run ./Jailbreak.sh my device enters pwned dfu mode fine but after it says "Sending iBSS and iBEC" it gives me this error:
/Users/[username]/Downloads/4tify-master/Jailbreak.sh: line 7: 2854 Killed: 9

I have tries running it with bash, zsh, giving it root privileges and I can't get it to work!
I am running macOS Big Sur 11.0.1

[Deadshot23610]

I tried running the tool on High Sierra but now I get a different error. Here is the whole terminal output:
*** based on SHAtter exploit (segment overflow) by posixninja and pod2g ***
Found: CPID:8930 CPRV:20 CPFM:03 SCEP:01 BDID:00 ECID:000003AC0001C5CE IBFL:00 SRTG:[iBoot-574.4]
Device is now in pwned DFU Mode.
Sending iBSS and iBEC
[==================================================] 100.0%
[==================================================] 100.0%
Waiting for Connection, This Might Take Some Time...
Apple Mobile Device (Recovery Mode):
Booting...
iPhone:
Establishing Connection (5s)...
Establishing Jailbreak Environment (8s)...
Waiting For Filesystem (5s)...
Sending Tar and DD...
Waiting For Filesystem (5s)...
Sending Jailbreak Files 1/5...
Sending Jailbreak Files 2/5...
Sending Jailbreak Files 3/5...
Sending Jailbreak Files 4/5...
Sending Jailbreak Files 5/5...
Sending Tar and DD...
Jailbreaking...
Sending Debs...
Fetching Springboard...
send: spawn id exp6 not open
while executing
"send "alpine\r""
(file "/dev/fd/63" line 5)

[HunterBoy344]

At least for me, the solution for the first error was to run brew install libimobiledevice and brew install libirecovery, then replace every instance of ./irecovery with irecovery in Jailbreak.sh. Then, if it complains later about patching springboard, comment out the line immediately after echo "Patching Springboard" in Jailbreak.sh