diff --git a/AGENTS.md b/AGENTS.md
index 50c3983..63d2afd 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -29,8 +29,9 @@ gamescope and the Plasma desktop. Primary target: the Valve Steam Machine
   `<id>_available` is checked via `component_available` (e.g. `machine`
   only on Fremont). Turn-on order is `COMPONENTS` order, turn-off reverse;
   `gaming` must stay first. Dependencies live in `toggle_component`.
-- **Feature versions.** Bump `FEATURE_VERSION[<id>]` (`lib/menu.sh`) whenever
-  what `<id>_enable` sets up changes: installs recorded with an older number
+- **Feature versions.** Set `FEATURE_VERSION[<id>]` (`lib/menu.sh`) to the new
+  `VERSION` whenever what `<id>_enable` sets up changes (a new component gets
+  one too): installs recorded with an older version
   are ticked and re-applied ("update" in the plan and the app). New default
   sub-options are ticked for installs whose parent is on (`feature_new`).
   Status still comes from the system; don't add ad-hoc `<id>_repair` checks
diff --git a/TECHNICAL.md b/TECHNICAL.md
index 3e2d66b..2bb7b10 100644
--- a/TECHNICAL.md
+++ b/TECHNICAL.md
@@ -238,20 +238,24 @@ normal run adds it.
 
 ## Feature versions (updates)
 
-Each component has a feature version (`FEATURE_VERSION` in `lib/menu.sh`,
-1 when not listed). After a component is turned on successfully, the version
-is recorded in `~/.local/state/cachyos-gamescope-boot/features.state`
+Each component has a feature version (`FEATURE_VERSION` in `lib/menu.sh`):
+the Steamify version in which what it sets up last changed (2.1.0 for
+everything that hasn't changed since). After a component is turned on
+successfully, that version is recorded in `~/.local/state/cachyos-gamescope-boot/features.state`
 (turning it off records `off`). Whether a component is on is always checked
 on the system itself; the version only decides about updates:
 
 - **On, recorded version older** than the current one: ticked and
   re-applied by a normal run; the plan (and the app's review) says
-  "update". A setup from before versions were recorded counts as 1.
+  "update". A setup from before versions were recorded counts as 2.1.0,
+  so on a machine set up with 2.1.0, Steam Machine support (2.2.0) is
+  updated.
 - **A new default sub-option** (not in `NO_PRESELECT`) whose parent is on
   and that was never turned on or off: ticked, so a normal run adds it.
   Turning it off once records `off`, so it isn't ticked again.
 
-Bump a component's number whenever what its `<id>_enable` sets up changes.
+Set a component's entry to the new `VERSION` whenever what its
+`<id>_enable` sets up changes.
 
 ## BIOS updates (Steam Machine)
 
diff --git a/lib/menu.sh b/lib/menu.sh
index 6e1742f..6f64ecd 100644
--- a/lib/menu.sh
+++ b/lib/menu.sh
@@ -17,12 +17,18 @@ declare -A PARENT=([boot]=gaming [poweroff]=machine [kpin]=machine [hdmi]=machin
 # which has CEC like on SteamOS. HDMI refresh boost needs someone at the
 # screen to confirm each step.
 NO_PRESELECT=(boot cec kpin hdmi)
-# Feature versions: bump a component's number whenever what its enable sets
-# up changes. Each successful run records the number (state "features"); a
-# component that's on with an older number is ticked and re-applied by a
-# normal run, and the app shows it as an update. Unlisted = 1, and so is a
-# setup from before these were recorded.
-declare -A FEATURE_VERSION=()
+# Feature versions: the Steamify version in which what a component's enable
+# sets up last changed; set it to the new VERSION whenever you change one.
+# Each successful run records it (state "features"); a component that's on
+# with an older one is ticked and re-applied by a normal run, and the app
+# shows it as an update. A setup from before these were recorded counts as
+# FEATURE_BASELINE.
+FEATURE_BASELINE=2.1.0
+declare -A FEATURE_VERSION=(
+    [gaming]=2.1.0 [boot]=2.1.0 [theme]=2.1.0 [glyphs]=2.1.0 [single]=2.1.0
+    [launcher]=2.1.0 [cec]=2.1.0 [machine]=2.2.0 [poweroff]=2.2.0
+    [kpin]=2.1.0 [hdmi]=2.1.0
+)
 
 declare -A LABEL=(
     [gaming]="SteamOS conversion: boot into gaming mode, Steam on the desktop"
@@ -66,16 +72,19 @@ menu_visible() {
 
 feature_record() {
     # feature_record <component> <enable|disable>: after a successful run.
-    if [[ "$2" == enable ]]; then state_set features "$1" "${FEATURE_VERSION[$1]:-1}"
+    if [[ "$2" == enable ]]; then state_set features "$1" "${FEATURE_VERSION[$1]:-$FEATURE_BASELINE}"
     else state_set features "$1" off; fi
 }
 
 feature_outdated() {
-    # On, but set up by an older version of that feature.
-    local have
+    # On, but set up by an older version of that feature (compared as
+    # versions: 2.10.0 is newer than 2.9.0).
+    local have want
     [[ "${CURRENT[$1]:-0}" == 1 ]] || return 1
-    have="$(state_get features "$1" 1)"
-    [[ "$have" =~ ^[0-9]+$ ]] && (( have < ${FEATURE_VERSION[$1]:-1} ))
+    have="$(state_get features "$1" "$FEATURE_BASELINE")"
+    [[ "$have" == off ]] && have="$FEATURE_BASELINE"
+    want="${FEATURE_VERSION[$1]:-$FEATURE_BASELINE}"
+    [[ "$have" != "$want" && "$(printf '%s\n' "$have" "$want" | sort -V | head -n 1)" == "$have" ]]
 }
 
 feature_new() {