diff --git a/arch/libva-v4l2-request-fourier/PKGBUILD b/arch/libva-v4l2-request-fourier/PKGBUILD
index 6af827603..68ee37139 100644
--- a/arch/libva-v4l2-request-fourier/PKGBUILD
+++ b/arch/libva-v4l2-request-fourier/PKGBUILD
@@ -6,8 +6,11 @@
 # tracks the campaign fork's git history directly, so iteration sweeps
 # (DEBUG removal, follow-up bugfixes) land in a clean linear log.
 #
-# Campaign: ~/src/libva-multiplanar/ (eight closed iterations as of
-# 2026-05-06; iter8 close is the production tip pinned below).
+# Campaign: ~/src/libva-multiplanar/ (iter8 close 2026-05-06) plus
+# ~/src/fresnel-fourier/ which carried the fork to iter38b — multi-device
+# probe so a single libva session serves all 5 codecs (rkvdec H.264 +
+# HEVC + VP9, hantro MPEG-2 + VP8) plus a bounds-check fix for
+# MAX_PROFILES. Pinned below.
 # Fork repo: https://git.reauktion.de/marfrit/libva-v4l2-request-fourier
 # Bootlin upstream: https://github.com/bootlin/libva-v4l2-request
 #
@@ -20,16 +23,19 @@
 pkgname=libva-v4l2-request-fourier
 _upstreampkg=libva-v4l2-request
 
-# Pin the fork tip. 65969da = "iter8 Phase 4: tests/run_perf_binding_cell.sh"
-# — last commit on master before fresnel-fourier work started layering
-# MPEG-2 rewrites on top of it (2026-05-08). The libva-multiplanar campaign
-# closed iter8 at this commit; promote to a later pin only after a future
-# iteration closes cleanly.
-_commit=65969da3ee901442a8ca4e1f7f9697d5461d368a
+# Pin the fork tip. 7ac934e = "iter38b: bounds check uses MAX_PROFILES
+# (11), not MAX_CONFIG_ATTRIBUTES (10)" — fresnel-fourier campaign
+# production tip 2026-05-14, sibling iter38 added multi-device probe so
+# a single libva session serves rkvdec + hantro without requiring
+# LIBVA_V4L2_REQUEST_VIDEO_PATH overrides. Promote to a later pin only
+# after a future iteration closes cleanly.
+_commit=7ac934e0c5420814c7a5fc3e2a2f08251d590d9e
 
 # Project version from meson.build (1.0.0) + commit count + short sha,
-# matching the ffmpeg-v4l2-request-fourier convention.
-pkgver=1.0.0.r280.65969da
+# matching the ffmpeg-v4l2-request-fourier convention. Recomputed at
+# build time by pkgver() below; the static value here is a placeholder
+# so AUR-style consumers see something coherent before src/ exists.
+pkgver=1.0.0.r348.7ac934e
 pkgrel=1
 pkgdesc="VA-API backend for V4L2 stateless decoders (multiplanar fork — fourier umbrella)"
 arch=('aarch64')