pm3 ~/proxmark3$ ./pm3-flash-bootrom
[=] Session log C:\ProxSpace\pm3/.proxmark3/logs/log_20221029.txt
[+] About to use the following file:
[+] bootrom.elf
[+] Loading ELF file bootrom.elf
[+] ELF file version Iceman/master/v4.15864-2-g1f75adcf6 2022-10-28 18:11:14 844ca091a
[+] Waiting for Proxmark3 to appear on COM3
[|] 59 found
[+] Entering bootloader…
[+] (Press and release the button only to abort)
[+] Waiting for Proxmark3 to appear on COM3
[-] 39 found
[!!] ====================== OBS ! ===========================================
[!!] Note: Your bootloader does not understand the new CMD_BL_VERSION command
[!!] It is recommended that you first update your bootloader alone,
[!!] reboot the Proxmark3 then only update the main firmware
[!!] ------------- Follow these steps -------------------
[!!] 1) ./pm3-flash-bootrom
[!!] 2) ./pm3-flash-all
[!!] 3) ./pm3
[=] ---------------------------------------------------
[=] Available memory on this board: UNKNOWN
[!!] ====================== OBS ! ======================================
[!!] Note: Your bootloader does not understand the new CHIP_INFO command
[=] Permitted flash range: 0x00100000-0x00140000
[!!] ====================== OBS ! ========================================
[!!] Note: Your bootloader does not understand the new START_FLASH command
[+] Loading usable ELF segments:
[+] 0: V 0x00100000 P 0x00100000 (0x00000200->0x00000200) [R X] @0x94
[+] 1: V 0x00200000 P 0x00100200 (0x00000d1c->0x00000d1c) [R X] @0x298