freemkv-flash
Beta
A generic optical-drive flasher and dumper.
Not freemkv-specific. It flashes and dumps any
drive firmware image, for any purpose. It always backs up before
writing, and reads back after every write to confirm it took.
Works with MediaTek and Renesas optical drives.
- 1 Probe
infoidentifies the drive before you touch anything. - 2 Dump / back up Always keep the stock image before flashing.
- 3 Flash Writes the image, then automatically reads it back to confirm.
# 1. Identify the drive first — any MTK optical drive
$ freemkv-flash info <dev>
# 2. Always dump before touching anything — full image + read-surface map
$ freemkv-flash dump <dev>
# 3. Flash — backs up automatically, writes, then reads back to verify
$ freemkv-flash flash <dev> -i BU40N_1.00.freemkv.binBeta: info and dump are the safe, recommended commands
We have run every freemkv-flash command — including
flash — on the LG BU40N with no problems.
info and dump are read-only and safe to
run on any supported drive today.
Caution using flash on anything other than a BU40N: it
can permanently brick a drive if interrupted or given the wrong
image.
It backs up before writing and reads back after, but always keep
your own dump too.
macOS
Download ARM64 · CLI Apple Silicon — terminal Download x86_64 · CLI Intel — terminal
GUI app — install with Homebrew (flash + modify):
brew install --cask freemkv/tap/freemkv-firmware