$ JLinkExe -if swd
SEGGER J-Link Commander V6.80d (Compiled Jun 26 2020 17:19:52)
DLL version V6.80d, compiled Jun 26 2020 17:19:40

Connecting to J-Link via USB…O.K.
Firmware: J-Link V11 compiled Jun 9 2020 13:38:27
Hardware version: V11.00
S/N: xxxxxxxx
License(s): GDB
VTref=3.337V

Type "connect" to establish a target connection, '?' for help
J-Link>con
Please specify device / core. : STM32L496RE
Type '?' for selection dialog
Device>STM32F405RG
Specify target interface speed [kHz]. : 4000 kHz
Speed>
Device "STM32F405RG" selected.

Connecting to target via SWD
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
DPIDR: 0x2BA01477
Scanning AP map to find all available APs
AP[1]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
Cortex-M4 identified.
J-Link>loadbin nuttx.bin, 0
Halting CPU for downloading file.
Downloading file [nuttx.bin]…
Comparing flash [100%] Done.
Erasing flash [100%] Done.
Programming flash [100%] Done.
J-Link: Flash download: Bank 0 @ 0x08000000: 1 range affected (32768 bytes)
J-Link: Flash download: Total: 0.898s (Prepare: 0.014s, Compare: 0.020s, Erase: 0.751s, Program & Verify: 0.109s, Restore: 0.002s)
J-Link: Flash download: Program & Verify speed: 293 KB/s
O.K.
J-Link>