[BUG] iPhone 6S fails using Mac Mini

[badger200]

iOS 13.3, OS X 10.9, Apple lightning cable

It just got stuck forever at the last step waiting for reconnect:

07:55:26 Mac-Mini.local:/src/ra1npoc/src power$ ./ra1npoc_macosx -v -d -c
* checkRAIN clone v2.1.4 for iOS by interception
[BUILTIN] v0.12.4
[main] enabled: debug log
[enter_dfu_via_recovery] Waiting for device in Recovery mode...
[io_get_serial] Found serial number!
[enter_dfu_via_recovery] CONNECTED: Recovery mode
[enter_dfu_via_recovery] CPID: 0x8000, BDID: 0x4
[enter_dfu_via_recovery] enterdfuType: 2

================
::
:: enter_dfu_via_recovery
:: CPID: 0x8000 BDID: 0x04 TYPE: 0x02
::
:: Time to put the device into DFU mode
:: Please follow the instructions below to operate the device.
::
:: STEP1 Press <enter> key.
:: STEP2 Press and hold Side(or Top) and Home buttons together (4sec)
:: STEP3 Release Side(or Top) button But keep holding Home button (10sec)
================

ready? it starts 3 seconds after press <enter> key.
[STEP1] Press <enter> key >> 

[STEP2] Press and hold Side(or Top) and Home buttons together (4sec)
[====] (4/4 sec)
[STEP3] Release Side(or Top) button But keep holding Home button (10sec)
[==========] (10/10 sec)
[enter_dfu_via_recovery] reconnecting
[enter_dfu_via_recovery] DONE!
[main] Waiting for device in DFU mode...
[io_get_serial] Found serial number!
[main] CONNECTED: DFU mode
[main] CPID: 0x8000, STRG: [iBoot-2234.0.0.3.3]
[main] kpf_flags: 2
[main] enable: verbose boot
[main] bootArgs: rootdev=md0 -v
** exploiting with checkm8
[checkm8_arm64] reconnecting
[io_reset] ResetDevice: 0
[io_reset] USBDeviceReEnumerate: 0
[checkm8_arm64] running set_global_state()
[set_global_state] (1/3) sent: 0, val: 300
[set_global_state] (2/3) e000404f
[set_global_state] (3/3) 0
[checkm8_arm64] reconnecting
[checkm8_arm64] running heap_occupation()
[heap_occupation] (1/1) e0004051
load: 2.07  cmd: ra1npoc_macosx 80892 waiting 4.10u 12.95s
[heap_occupation] send_abort: e00002eb
[checkm8_arm64] reconnecting
[checkm8_arm64] ERROR:Failed to reconnect to device