From 79f332448842e330a5c9c4b3de2614c23764a15c Mon Sep 17 00:00:00 2001
From: Matthew Jackson <1085847+MattJackson@users.noreply.github.com>
Date: Fri, 18 Sep 2026 06:54:58 -0700
Subject: [PATCH] =?UTF-8?q?changelog:=201.7.2=20=E2=80=94=20record=20the?=
 =?UTF-8?q?=20SET=20data-phase=20unlock=20fix=20+=20READ=20CAPACITY/empty-?=
 =?UTF-8?q?ISO=20hardening?=
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---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 46a789c..de4c177 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [1.7.2] — UNRELEASED
 
+### Fixed
+
+- `FreemkvUnlocker::set` now issues the vendor SET over the required 64-byte data-in phase (mirroring `FirmwareControl::set`). freemkv firmware 0.8.x aborts a SET sent with no data phase (CHECK CONDITION / Aborted Command), so every drive-feature SET failed — including the load-bearing `Set(Ake, off)` — and the freemkv firmware unlock silently fell back to the AACS/online-key route. Drives on freemkv firmware now unlock via the freemkv route again (hardware-confirmed on BU40N fw 0.8.1).
+
 ### Changed
 
 - firmware: mirror ABI v2 — `Save` + `RESET`-to-flash/OEM modes, the region/speed value encodings, and the HRL/AKE/BUS `off = unlock` (`0x00`) polarity; `full_unlock`'s default profile flipped to match. Aligns `FirmwareControl` with freemkv firmware 0.8.0.