diff --git a/ota/update.sh b/ota/update.sh
index 2e6cb6c4..9df529e3 100644
--- a/ota/update.sh
+++ b/ota/update.sh
@@ -1,28 +1,54 @@
 #!/bin/bash
 
-set -e
+set -ex
 
-if [ $# != 1 ];then
-    echo "Usage: $0 <url to release gsi>"
+vers="$1"
+
+if [ -z "$vers" ];then
+    echo "Usage: $0 <github version name>"
     exit 1
 fi
 
-umount d || true
-rm -Rf s.img s2.img d
-
-wget "$1" -O - |xz -c -d > s.img
-simg2img s.img s2.img
-rm -f s.img
-mkdir -p d
-mount -o loop,ro s2.img d
-
-timestamp="$(sed -nE 's/ro.product.build.date.utc=(.*)/\1/p' d/system/product/build.prop)"
-flavor="$(sed -nE 's/ro.product.product.name=(.*)/\1/p' d/system/product/build.prop)"
-umount d
-
-mkdir -p "$flavor"
-echo "$timestamp" >> "$flavor/known_releases"
-echo "$timestamp" > "$flavor/date"
-echo "$1" > "$flavor/url"
-wc -c s2.img |grep -oE '^[0-9]+' > "$flavor/size"
-rm -f s2.img
+rm -f ota-list.json
+minUtc=""
+for i in /home/phh/Treble/treble_experimentations/cloud/release/release/220208/*.xz;do
+
+    # Grab props
+    unxz -dc $i |strings |grep -E -e ro.system.build.fingerprint= -e ro.build.flavor= -e ro.system.build.date.utc= > tmpprops
+
+    utc=$(sed -n -E -e 's/ro.system.build.date.utc=//p' tmpprops)
+    flavor=$(sed -n -E -e 's/ro.build.flavor=//p' tmpprops |sed -E 's/-user.*//g')
+    if echo "$i" |grep -qE secure;then
+        flavor="$flavor-secure"
+    elif echo "$i" |grep -qE vndklite;then
+        flavor="$flavor-vndklite"
+    fi
+
+    if [ "$minUtc" == "" ] || [ "$utc" -le "$minUtc" ];then
+        minUtc="$utc"
+    fi
+    size="$(du -s "$i" |grep -oE '^[0-9]+')"
+    url=https://github.com/phhusson/treble_experimentations/releases/download/"$vers"/"$(basename "$i")"
+    cat >> ota-list.json << EOF
+{ "name": "$flavor", "size": $size, "url": "$url"},
+EOF
+done
+
+# Add a stupid entry to not have to remove the trailing `,`
+echo '{ "name": "useless", "size": 0, "url": "http://devnull.org"}' >> ota-list.json
+
+# Optimism
+minUtc=$((minUtc-100))
+
+cat > ota.json << EOF
+{
+    "version": "$vers",
+    "date": "$minUtc",
+    "variants": [
+EOF
+cat ota-list.json >> ota.json
+
+cat >> ota.json << EOF
+    ]
+}
+EOF