Checkra1n error 77 while jailbreaking

[gulshan-86]

Can not jailbreak my iphone 7 plus on 13.4.1 using checkra1n version 0.10.1 everytime it shows error 77 and device booted in normal mode

[TonnyMontenegro]

To perform the jailbreak you need to remove your pin (only if appear - 77 error, in case you cannot do it you would have to restore it from iTunes or another tool and leave it on the activation screen)

-77 error means there was an error when jailbreaking, cause you have pin security enabled

[gulshan-86]

I have removed pin and tried rejailbreaking after update from 13.3.1 to 13.4.1 ....but it always shows usb(-77) error in bootra1n and also in ubuntu