I used all pwndfu methods still failed
BOOT RAMDISK [2]
Checking for device... OK Info: iPhone 8 Plus (Global) [iPhone10,2-d21ap]
Boot: [IBOOT-3332.0.0.1.23] [DFU]
Pwnder: CHECKM8 Initializing... OK
Sending ssh... OK
Sending ibss.img4... OK Sending ibec.img4... FAIL
ERROR: Unable to connect to device
UNLOCKTOOL 2022.07.25.0 Elapsed time: 1 minute 18 seconds
BOOT RAMDISK [2]
Checking for device... OK Info: iPhone 8 Plus (Global) [iPhone10,2-d21ap]
Boot: [IBOOT-3332.0.0.1.23] [DFU]
Pwnder: CHECKM8 Initializing... OK
Sending ssh... OK
Sending ibss.img4... OK Sending ibec.img4... FAIL
ERROR: Unable to connect to device
UNLOCKTOOL 2022.07.25.0 Elapsed time: 1 minute 18 seconds