diff --git a/README.md b/README.md
index fd8bceb..77be180 100644
--- a/README.md
+++ b/README.md
@@ -4,14 +4,16 @@ Bosun turns the Logitech G13 into a cross-platform command console for AI coding
 
 ## Status
 
-Phase 0 is complete on live Windows hardware. M1 software paths are mockable: a synchronous HID transport, a G13 TOML descriptor and codec, `MockTransport`, and `bosunctl device list|info|watch|record|rgb|leds|lcd test`. Live shared-input (AC-R1) is still pending a finger-on-key run.
+Phase 0 is complete on live Windows hardware. M1 software paths are mockable: a synchronous HID transport, a G13 TOML descriptor and codec, `MockTransport`, and `bosunctl device list|info|watch|record|rgb|leds|lcd test`.
+
+AC-R1 measured **fail both** (0 reports with LGS running and with LCore stopped) on 2026-09-20; details in `docs/hardware-notes.md`. Per `docs/PRD.md` AC-R1 / R1, **fail both stops M1** for Kyle's review — no HID redesign hop from this potato.
 
 ## Non-negotiable boundaries
 
 - Stock OS HID stack only: no libusb, WinUSB/Zadig, kexts, or kernel modules.
 - Dual-licensed under MIT OR Apache-2.0; GPL-derived source is not accepted.
 - Do not consult or copy GPL G13 driver source. The measured protocol is documented in `docs/BOSUN-PLAN.md`.
-- Logitech Gaming Software may overwrite LCD/RGB output. The first M1 hardware test must determine whether shared input reads work while LGS is running.
+- Logitech Gaming Software may overwrite LCD/RGB output.
 
 See `AGENTS.md`, `docs/PLAN-REVIEW.md`, and `docs/BOSUN-PLAN.md` before implementing. The product requirements, M1 acceptance criteria, and open owner decisions are in `docs/PRD.md`.
 
diff --git a/docs/hardware-notes.md b/docs/hardware-notes.md
index 1db9e4a..5f5fa35 100644
--- a/docs/hardware-notes.md
+++ b/docs/hardware-notes.md
@@ -1,7 +1,15 @@
 # Hardware Notes
 
-## Pending M1 capture
+## AC-R1 outcome (2026-09-20 WINDOWS-CU-20260920-01)
+
+- **fail both**
+- Path: `\\?\HID#VID_046D&PID_C21C#7&1562afa0&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}` (usage_page=ff00)
+- Run 1: LGS/LCore running (pid 8668) — 0 input reports in 15s (Kyle mash requested)
+- Run 2: LCore stopped — 0 input reports in 15s (Kyle mash requested)
+- bosun tip: `706ecd8` main
+- Non-HW suite: 38+1 pass same session
+
+## Still pending (not AC-R1)
 
-- Shared input reports while LGS runs: not yet verified with physical keypresses.
 - Physical mapping for bitmap names LEFT, DOWN, and TOP: not yet verified.
 - Joystick center, cardinal extremes, corners, and diagonal envelope: not yet recorded.