diff --git a/apps/fwupdate/custom.html b/apps/fwupdate/custom.html
index 11ba50717..6c47cf3f2 100644
--- a/apps/fwupdate/custom.html
+++ b/apps/fwupdate/custom.html
@@ -105,6 +105,7 @@ function onInit(device) {
     if (crcs[0] == 1787004733) version = "2v20"; // check 6 page CRCs - the 7th page isn't used in 2v20+
     else if (crcs[0] == 3816337552) version = "2v21";
     else if (crcs[0] == 3329616485) version = "2v22";
+    else if (crcs[0] == 1569433504) version = "2v23";
     else { // for other versions all 7 pages are used, check those
       var crc = crcs[1];
       if (crc==1339551013) { version = "2v10.219"; ok = false; }