Microsoft Windows [Wersja 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Wszelkie prawa zastrzeżone.

b:\Program Files (x86)\SEGGER\JLink_V512h>Jlink
SEGGER J-Link Commander V5.12h (Compiled Jun 29 2016 17:47:46)
DLL version V5.12h, compiled Jun 29 2016 17:47:05

Connecting to J-Link via USB...
**************************
WARNING: Out of sync , resynchronizing...
**************************

J-Link communication resynchronized
O.K.
Firmware: J-Link ARM V8 compiled Nov 28 2014 13:44:46
Hardware version: V8.00
S/N: XXXXXX
License(s): FlashBP, GDB
OEM: SEGGER-EDU
VTref = 3.267V


Type "connect" to establish a target connection, '?' for help
J-Link>device STM32F407VG
J-Link>erase
Target connection not established yet but required for command.
Please specify target interface:
  J) JTAG (Default)
  S) SWD
TIF>S
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>100
Device "STM32F407VG" selected.


Found SWD-DP with ID 0x2BA01477
Found SWD-DP with ID 0x2BA01477
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl 0 @ E00FF000
ROMTbl 0 [0]: FFF0F000, CID: B105E00D, PID: 000BB00C SCS
ROMTbl 0 [1]: FFF02000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl 0 [2]: FFF03000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl 0 [3]: FFF01000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl 0 [4]: FFF41000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl 0 [5]: FFF42000, CID: B105900D, PID: 000BB925 ETM
Cortex-M4 identified.
Erasing device (STM32F407VG)...

****** Error: Failed to download RAMCode!
ERROR: Erase returned with error code -1.
J-Link>