Jl381a — Firmware

show version
show flash
show boot-history
copy running-config startup-config
boot system flash primary|secondary

For stacking (VSF):

show vsf
show vsf upgrade-status

One of the best features of the JL381A is the Dual Flash architecture. If a new firmware bricks the switch (rare, but possible during a power outage), the boot loader will automatically roll back to the previous working image. jl381a firmware

To manually roll back:

boot system primary  # If secondary failed

Reputable sources provide a CRC32 or MD5 checksum for their firmware files. Always verify. One wrong bit can cause the I2S clock to misalign, producing screeching audio. For stacking (VSF): show vsf show vsf upgrade-status

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. One of the best features of the JL381A

Small electronics manufacturers buy bare JL381A chips and need a reference firmware to boot the MCU. They search for a base .bin file to modify.

The 3810M has primary/secondary flash. Always update inactive bank first, test, then promote.

copy primary secondary   # copies good running image to backup