Add support for older devices (Libra 2 and newer)

tests/validate-dl-urls.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+set -euo pipefail
+
+# Validate all firmware download URLs in downloads.json via HEAD requests.
+# Exits with code 1 if any URL is invalid.
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)/../web/src/patches"
+DOWNLOADS="$SCRIPT_DIR/downloads.json"
+
+# Extract unique URLs (skip keys starting with _).
+URLS=$(node -e "
+  const d = require('$DOWNLOADS');
+  const seen = new Set();
+  for (const [key, val] of Object.entries(d)) {
+    if (key.startsWith('_') || typeof val !== 'object') continue;
+    for (const url of Object.values(val)) {
+      if (!seen.has(url)) { seen.add(url); console.log(url); }
+    }
+  }
+")
+
+FAILED=0
+TOTAL=0
+
+while IFS= read -r url; do
+  TOTAL=$((TOTAL + 1))
+  STATUS=$(curl -s -o /dev/null -w "%{http_code}" --head "$url")
+  if [ "$STATUS" -ge 200 ] && [ "$STATUS" -lt 400 ]; then
+    echo "  OK  $STATUS  $url"
+  else
+    echo "FAIL  $STATUS  $url"
+    FAILED=$((FAILED + 1))
+  fi
+done <<< "$URLS"
+
+echo ""
+echo "$TOTAL URLs checked, $FAILED failed."
+[ "$FAILED" -eq 0 ]