ios11.4.1用Electra越狱后frida砸壳总是出现timeout was reached

技能讨论
1

frida-ios-dump支持的python2.0的
在./dump.py xxx后出现
sfzdeMac-mini:frida-ios-dump-master sfz$ ./dump.py ProtonMail
Waiting for USB device…
Start the target app ProtonMail
timeout was reached
这是怎么回事呢？