From 2234b227c404182562949e2ea1142590fa6d1fe7 Mon Sep 17 00:00:00 2001
From: "xin.zhang" <xin.zhang@bambulab.com>
Date: Wed, 24 Sep 2025 19:44:49 +0800
Subject: [PATCH] ENH: the old protocol only support AMS_LITE

JIRA: [STUDIO-14841]
Change-Id: I6040d54490a79b323fcd7000a638e5fc4b45b0b4
(cherry picked from commit b6274332d7dc8077b2612ef4518a9cbaf12123d9)
---
 src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp b/src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp
index 2ef791b723..f17841f641 100644
--- a/src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp
+++ b/src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp
@@ -361,11 +361,14 @@ void DevFilaSystemParser::ParseV1_0(const json& jj, MachineObject* obj, DevFilaS
                     int type_id = 1;   // 0:dummy 1:ams 2:ams-lite 3:n3f 4:n3s
 
                     /*ams info*/
-                    if (it->contains("info"))
-                    {
+                    if (it->contains("info")) {
                         const std::string& info = (*it)["info"].get<std::string>();
                         type_id = DevUtil::get_flag_bits(info, 0, 4);
                         extuder_id = DevUtil::get_flag_bits(info, 8, 4);
+                    } else {
+                        if (!obj->is_enable_ams_np) {
+                            type_id = DevAms::AMS_LITE;
+                        }
                     }
 
                     /*AMS without initialization*/