diff --git a/CHANGELOG.md b/CHANGELOG.md
index c14475c..9bbfdde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ single running list until the first versioned release.
 - **DM-1701 build support** — the Docker build is now parameterized by platform;
   `./build-firmware.sh DM1701` produces `OpenDM1701.bin` (Baofeng DM-1701 /
   Retevis RT-84). Not officially tested yet.
+- **Release script** (`scripts/forgejo-release.sh`) now builds and attaches a
+  single platform or all of them, and reuses an existing release.
+- README: added "What's different from OpenGD77" and a dedicated "Flashing"
+  section.
 
 ## 0.1.0
 
diff --git a/README.md b/README.md
index 982f3d3..1653ef5 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,29 @@ icons, and more). See [`CHANGELOG.md`](CHANGELOG.md) for the full list.
 | --- | --- |
 | ![DMR call with the block S-meter](docs/images/screenshot-dmr.png) | ![VFO with the 7-segment frequency font](docs/images/screenshot-vfo.png) |
 
+## What's different from OpenGD77
+
+FreeTRX keeps OpenGD77's core (DMR/FM, hotspot, CPS compatibility) and adds:
+
+- **Audio mute — new SK2 short-tap.** A short tap of **SK2** on the VFO/Channel
+  screen toggles the speaker mute on and off. Turning the **volume knob fully
+  down** counts as muted too. While muted, a bold **"M"** appears in the status
+  bar (left of the battery) and the **red LED flashes** (0.5 s every 2 s). SK2's
+  existing roles are unchanged: held as a modifier, extra-long-press for
+  monitor/squelch-off, and — while a DMR QSO is on screen — a tap still sets the
+  TX talkgroup to the incoming one.
+- **Segmented block S-meter** with one block per S-level (S1–S9 green, S9+ red)
+  and a scale label row (S1 S3 S5 S7 S9 / +20 +40 +60).
+- **7-segment "LED" frequency font** with faintly-lit inactive segments, on the
+  VFO and the SK1-held frequency view.
+- **Screen dimming** — optionally dim the backlight to 100 / 50 / 30 % after
+  inactivity (Auto backlight mode); new setting in Display Options.
+- **Main-menu icons** next to each top-level entry.
+- **DMR reliability fix** — resolves a hard-fault (freeze needing a battery pull)
+  on the DMR path that affected recent self-built OpenGD77 revisions.
+
+See [`CHANGELOG.md`](CHANGELOG.md) for the complete list.
+
 ## Supported radios
 
 This first iteration is developed for and **tested only on the TYT MD-UV380 and
@@ -40,10 +63,35 @@ As with OpenGD77, the source does **not** contain the AMBE codec required for DM
 audio. It is merged in from an official manufacturer firmware (V26.45) at flash
 time by the firmware loader. See [`TOOLS.md`](TOOLS.md).
 
-## Building, flashing & tools
+## Flashing
 
-See [`TOOLS.md`](TOOLS.md) for building (Docker + Arm GNU Toolchain 14), flashing
-(`./flash.sh`), grabbing screenshots, and building language files.
+Pre-built firmware is attached to each
+[release](https://git.dk1da.de/DK1DA/FreeTRX/releases): `OpenMDUV380.bin` for the
+MD-UV380 / RT-3S, `OpenDM1701.bin` for the DM-1701 / RT-84. (Or build your own —
+see below.)
+
+1. **Enter firmware-update (DFU) mode:** power the radio **off**, then power it
+   **on while holding PTT + SK1** (the button above PTT). The screen stays blank
+   and the top LED glows steadily. Connect the USB cable.
+2. **Flash** with the helper (it applies the DMR codec donor and, optionally, a
+   secondary language):
+   ```bash
+   ./flash.sh -m MD-UV380 -f MDUV380_firmware/build/OpenMDUV380.bin
+   # DM-1701 / RT-84:
+   ./flash.sh -m DM-1701  -f MDUV380_firmware/build/OpenDM1701.bin
+   ```
+
+**DMR note:** the firmware image is FM-only until the **AMBE codec donor** (the
+official V26.45 manufacturer firmware) is merged in at flash time. Register it
+once with `./flash.sh -s /path/to/official_V26.45.bin`; the path is then
+remembered. Full options, the DFU device list and the underlying loader are
+documented in [`TOOLS.md`](TOOLS.md).
+
+## Building & tools
+
+See [`TOOLS.md`](TOOLS.md) for building in Docker
+(`./build-firmware.sh [MDUV380|DM1701]`, Arm GNU Toolchain 14), grabbing
+screenshots, and building language files.
 
 ## License
 
diff --git a/TOOLS.md b/TOOLS.md
index d95d9f3..5e3bc6f 100644
--- a/TOOLS.md
+++ b/TOOLS.md
@@ -26,11 +26,13 @@ the official OpenGD77 firmware uses. (Ubuntu's stock GCC 10 miscompiles the DMR
 path; see the git history.)
 
 ```bash
-./build-firmware.sh
+./build-firmware.sh            # MD-UV380 / RT-3S  -> build/OpenMDUV380.bin  (default)
+./build-firmware.sh DM1701     # DM-1701 / RT-84   -> build/OpenDM1701.bin
 ```
 
-Output: `MDUV380_firmware/build/OpenMDUV380.bin` (the flashable, FM-only image; the DMR
-codec is merged in at flash time — see below). The build is always clean (`rm -rf build`).
+Output: `MDUV380_firmware/build/Open<platform>.bin` (the flashable, FM-only image; the DMR
+codec is merged in at flash time — see below). The build is always clean (`rm -rf build`),
+so building one platform overwrites the other's output.
 
 ---
 
diff --git a/scripts/forgejo-release.sh b/scripts/forgejo-release.sh
index ea83752..2cd5c39 100644
--- a/scripts/forgejo-release.sh
+++ b/scripts/forgejo-release.sh
@@ -1,37 +1,74 @@
 #!/usr/bin/env bash
 #
-# Create a Forgejo release for a tag and attach the built firmware binary.
+# Build and publish a FreeTRX release on Forgejo, attaching the firmware binaries.
 #
-# Requires a Forgejo API token in the FORGEJO_TOKEN env var
+# Requires a Forgejo API token in FORGEJO_TOKEN
 # (Forgejo -> Settings -> Applications -> Generate New Token, scope: write:repository).
-# The release notes are taken from the matching "## <version>" section of CHANGELOG.md.
+# Release notes are taken from the matching "## <version>" section of CHANGELOG.md.
+# If the release already exists it is reused; assets of the same name are replaced.
 #
-# Usage:  FORGEJO_TOKEN=xxxxx scripts/forgejo-release.sh v0.1.0
+# Usage:  FORGEJO_TOKEN=xxx scripts/forgejo-release.sh <tag> [platform ...]
+#   platform: MDUV380 | DM1701 | all   (default: all)
+# Examples:
+#   scripts/forgejo-release.sh v0.1.0            # build + attach both binaries
+#   scripts/forgejo-release.sh v0.1.0 MDUV380    # just the MD-UV380 binary
 #
 set -euo pipefail
 
-TAG="${1:?usage: FORGEJO_TOKEN=... $0 <tag, e.g. v0.1.0>}"
+TAG="${1:?usage: FORGEJO_TOKEN=... $0 <tag> [MDUV380|DM1701|all]}"; shift || true
 VER="${TAG#v}"
 API="https://git.dk1da.de/api/v1/repos/DK1DA/FreeTRX"
-BIN="MDUV380_firmware/build/OpenMDUV380.bin"
 : "${FORGEJO_TOKEN:?set FORGEJO_TOKEN (Forgejo -> Settings -> Applications, scope write:repository)}"
 
 cd "$(dirname "${BASH_SOURCE[0]}")/.."
-[ -f "$BIN" ] || { echo "Missing $BIN - run ./build-firmware.sh first"; exit 1; }
 
-# Release body = the CHANGELOG section for this version.
+# Resolve requested platforms (default / "all" -> both).
+PLATFORMS=("$@")
+if [ ${#PLATFORMS[@]} -eq 0 ] || [ "${PLATFORMS[0]}" = "all" ]; then
+	PLATFORMS=(MDUV380 DM1701)
+fi
+bin_for() { case "$1" in MDUV380) echo OpenMDUV380 ;; DM1701) echo OpenDM1701 ;; *) return 1 ;; esac; }
+
+# Sanity check: the on-screen version should match the tag.
+FW_VER="$(grep -oE '"[0-9]+\.[0-9]+\.[0-9]+"' MDUV380_firmware/application/include/freetrxVersion.h | head -1 | tr -d '"')"
+[ "$FW_VER" = "$VER" ] || echo "WARNING: freetrxVersion.h is $FW_VER but tag is $VER — bump it before releasing?"
+
+# Build each platform and stage its binary (clean builds overwrite build/).
+STAGE="$(mktemp -d)"; trap 'rm -rf "$STAGE"' EXIT
+for P in "${PLATFORMS[@]}"; do
+	OUT="$(bin_for "$P")" || { echo "Unknown platform '$P' (use MDUV380, DM1701 or all)"; exit 1; }
+	echo "==> Building $P"
+	./build-firmware.sh "$P" >/dev/null
+	cp "MDUV380_firmware/build/${OUT}.bin" "$STAGE/${OUT}.bin"
+done
+
+# Release notes = the CHANGELOG section for this version.
 NOTES="$(awk -v v="## ${VER}" '$0==v{f=1} f&&/^## /&&$0!=v{exit} f{print}' CHANGELOG.md)"
 [ -n "$NOTES" ] || NOTES="FreeTRX ${TAG}"
 
-# Create the release (JSON body built safely via python).
-BODY="$(python3 -c 'import json,sys; print(json.dumps({"tag_name":sys.argv[1],"name":"FreeTRX "+sys.argv[1],"body":sys.argv[2],"draft":False,"prerelease":False}))' "$TAG" "$NOTES")"
-RESP="$(curl -fsS -X POST "$API/releases" -H "Authorization: token $FORGEJO_TOKEN" -H "Content-Type: application/json" -d "$BODY")"
-ID="$(printf '%s' "$RESP" | python3 -c 'import json,sys; print(json.load(sys.stdin).get("id",""))')"
-[ -n "$ID" ] || { echo "Failed to create release:"; echo "$RESP"; exit 1; }
-echo "Created release $TAG (id=$ID)"
+# Create the release, or reuse it if it already exists.
+ID="$(curl -sS "$API/releases/tags/$TAG" -H "Authorization: token $FORGEJO_TOKEN" | python3 -c '
+import json,sys
+try:
+    d=json.load(sys.stdin); print(d.get("id","") if isinstance(d,dict) else "")
+except Exception:
+    print("")')"
+if [ -z "$ID" ]; then
+	BODY="$(python3 -c 'import json,sys; print(json.dumps({"tag_name":sys.argv[1],"name":"FreeTRX "+sys.argv[1],"body":sys.argv[2],"draft":False,"prerelease":False}))' "$TAG" "$NOTES")"
+	ID="$(curl -fsS -X POST "$API/releases" -H "Authorization: token $FORGEJO_TOKEN" -H "Content-Type: application/json" -d "$BODY" | python3 -c 'import json,sys;print(json.load(sys.stdin)["id"])')"
+	echo "==> Created release $TAG (id=$ID)"
+else
+	echo "==> Reusing existing release $TAG (id=$ID)"
+fi
 
-# Attach the firmware binary.
-curl -fsS -X POST "$API/releases/$ID/assets?name=OpenMDUV380.bin" \
-	-H "Authorization: token $FORGEJO_TOKEN" -F "attachment=@$BIN" >/dev/null
-echo "Attached $BIN"
-echo "Done -> https://git.dk1da.de/DK1DA/FreeTRX/releases/tag/$TAG"
+# Attach each staged binary, replacing an existing asset of the same name.
+ASSETS="$(curl -fsS "$API/releases/$ID/assets" -H "Authorization: token $FORGEJO_TOKEN")"
+for f in "$STAGE"/*.bin; do
+	name="$(basename "$f")"
+	aid="$(printf '%s' "$ASSETS" | python3 -c 'import json,sys; n=sys.argv[1]; print(next((str(a["id"]) for a in json.load(sys.stdin) if a.get("name")==n),""))' "$name")"
+	[ -z "$aid" ] || curl -fsS -X DELETE "$API/releases/$ID/assets/$aid" -H "Authorization: token $FORGEJO_TOKEN" >/dev/null
+	curl -fsS -X POST "$API/releases/$ID/assets?name=$name" -H "Authorization: token $FORGEJO_TOKEN" -F "attachment=@$f" >/dev/null
+	echo "==> Attached $name"
+done
+
+echo "==> Done -> https://git.dk1da.de/DK1DA/FreeTRX/releases/tag/$TAG"