Iphone 6s boot passcode 15.x fail

[UM4]

Preparing.....OK
Fix Drivers.........Is Fixed (No Need)
Checking iDevices (PWNDFU).....OK
Reading iDevice info.....OK
Device NAME: iPhone 6s
Product NAME: iPhone8,1
Device ECID: 0x577f34541f9
Device CPID: 8000
Device SRTG: IBOOT-2234.0.0.3.3
Device MODE: DFU
Device CPU: A9
Exploiting Device [1]....
Sending File (shsh.shsh).....OK
Sending File (ibss.img4).....OK
Sending File (ibec.img4).....OK
Sending File (devicetree.img4).....OK
Sending File (ramdisk.img4).....OK
Exploiting Device [2]....
Sending File (kernel.img4).....OK
Failed! Check Drivers and Re-enter in PWNDFU and Try Again
Operation {Boot Passcode IOS 15.x} ID: 265BC2329ED57353
Elapsed time 04:43 -- Version 4.3.4


Preparing.....OK
Fix Drivers.........Is Fixed (No Need)
Checking iDevices (PWNDFU).....OK
Reading iDevice info.....OK
Device NAME: iPhone 6s
Product NAME: iPhone8,1
Device ECID: 0x577f34541f9
Device CPID: 8000
Device SRTG: IBOOT-2234.0.0.3.3
Device MODE: DFU
Device CPU: A9
Exploiting Device [1]....
Sending File (shsh.shsh).....OK
Sending File (ibss.img4).....OK
Sending File (ibec.img4).....OK
Sending File (devicetree.img4).....OK
Sending File (ramdisk.img4).....OK
Exploiting Device [2]....
Sending File (kernel.img4).....OK
Failed! Check Drivers and Re-enter in PWNDFU and Try Again
Operation {Boot Passcode IOS 15.x} ID: A04B27B30DE14EC4
Elapsed time 00:50 -- Version 4.3.4

Error scr №2: https://drive.google.com/file/d/1LEb...ew?usp=sharing
tried more than 10 times, to no avail, need help