From 9b2926052247ba93b02ebba5f6cd65a20e630f45 Mon Sep 17 00:00:00 2001
From: aiminick <83101338@qq.com>
Date: Tue, 9 Jun 2020 21:54:50 +0800
Subject: [PATCH] Update versions.md

---
 versions.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/versions.md b/versions.md
index 22e0567..9be304b 100644
--- a/versions.md
+++ b/versions.md
@@ -10,6 +10,10 @@
 
 #### 内核及固件（ kernel & firmware）：
 
+***注意：*** **U3固件不支持从 版本<=U2(包含在内)升级!!**
+
+***Note:*** **U3 fimware do not support upgrade from version <=U2(include) !!**
+
 *2019-12-30-v2019-2.0-U2-Release* ( **建议更新 - Suggested to upgrade** )
 
 - *最新 “2019-12-30-2.0-U2” 的系统不需要再更新固件*