This firmware package is intended for the HPE JL381A (OfficeConnect 1920S) switch series. It includes stability improvements for the PoE+ subsystem and resolves a memory leak issue observed with specific IPv6 multicast traffic.
Step 1 – Copy firmware to switch
copy tftp flash <tftp-server-ip> K_16_12_0005.swi primary
Step 2 – Verify image integrity
show flash
Step 3 – Set as boot image
boot system flash primary
Step 4 – Save config and reload
write memory
reload
Step 5 – Post-update check
show version
show running-config
Updates do not always go smoothly. Here are solutions to frequent problems:
Let’s assume you have a bricked Bluetooth speaker with a JL381A and a 4MB Winbond 25Q32.
Preparation:
Procedure:
Search intent for “JL381A firmware” usually falls into four categories:
Since the firmware lives on an external SPI flash, you can program it directly using a CH341A, FT2232H, or Raspberry Pi GPIO.
You will need:
Steps:
Timing tip: Set the CH341A speed to “Slow” (under 1 MHz) to avoid bus errors with long wires.
Cause: Incorrect firmware (e.g., loading JL381B firmware onto a JL381A) or power loss during flash write. Solution:
My advice for JL381A: Stick with the 16.11 release train for production. It is the "Gold Standard" for the 2930F chassis. jl381a firmware