diff --git a/coolq/api.go b/coolq/api.go
index 21defb1..6005c10 100644
--- a/coolq/api.go
+++ b/coolq/api.go
@@ -1427,7 +1427,7 @@ func (bot *CQBot) CQHandleQuickOperation(context, operation gjson.Result) global
 func (bot *CQBot) CQGetImage(file string) global.MSG {
 	var b []byte
 	var err error
-	if cache.EnableCacheDB && strings.HasSuffix(file, ".image") {
+	if strings.HasSuffix(file, ".image") {
 		var f []byte
 		f, err = hex.DecodeString(strings.TrimSuffix(file, ".image"))
 		b = cache.Image.Get(f)
diff --git a/coolq/cqcode.go b/coolq/cqcode.go
index 0297420..eb6c8fd 100644
--- a/coolq/cqcode.go
+++ b/coolq/cqcode.go
@@ -1309,7 +1309,7 @@ func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video bool, sourceTy
 	}
 	rawPath := path.Join(global.ImagePath, f)
 	if video {
-		if strings.HasSuffix(f, ".video") && cache.EnableCacheDB {
+		if strings.HasSuffix(f, ".video") {
 			hash, err := hex.DecodeString(strings.TrimSuffix(f, ".video"))
 			if err == nil {
 				if b := cache.Video.Get(hash); b != nil {
@@ -1334,7 +1334,7 @@ func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video bool, sourceTy
 			return &LocalImageElement{File: cacheFile}, nil
 		}
 	}
-	if strings.HasSuffix(f, ".image") && cache.EnableCacheDB {
+	if strings.HasSuffix(f, ".image") {
 		hash, err := hex.DecodeString(strings.TrimSuffix(f, ".image"))
 		if err == nil {
 			if b := cache.Image.Get(hash); b != nil {
diff --git a/coolq/event.go b/coolq/event.go
index 0199bf6..d89707d 100644
--- a/coolq/event.go
+++ b/coolq/event.go
@@ -726,7 +726,6 @@ func (bot *CQBot) groupDecrease(groupCode, userUin int64, operator *client.Group
 }
 
 func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
-	// TODO(wdvxdr): remove these old cache file in v1.0.0
 	for _, elem := range e {
 		switch i := elem.(type) {
 		case *message.GroupImageElement:
@@ -744,12 +743,8 @@ func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
 				w.WriteString(i.ImageId)
 				w.WriteString(i.Url)
 			})
-			filename := hex.EncodeToString(i.Md5) + ".image"
-			if cache.EnableCacheDB {
-				cache.Image.Insert(i.Md5, data)
-			} else if !global.PathExists(path.Join(global.ImagePath, filename)) {
-				_ = os.WriteFile(path.Join(global.ImagePath, filename), data, 0o644)
-			}
+			cache.Image.Insert(i.Md5, data)
+
 		case *message.GuildImageElement:
 			data := binary.NewWriterF(func(w *binary.Writer) {
 				w.Write(i.Md5)
@@ -758,14 +753,9 @@ func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
 				w.WriteString(i.Url)
 			})
 			filename := hex.EncodeToString(i.Md5) + ".image"
-			if cache.EnableCacheDB {
-				cache.Image.Insert(i.Md5, data)
-			} else if !global.PathExists(path.Join(global.ImagePath, filename)) {
-				_ = os.WriteFile(path.Join(global.ImagePath, filename), data, 0o644)
-			}
-
+			cache.Image.Insert(i.Md5, data)
 			if i.Url != "" && !global.PathExists(path.Join(global.ImagePath, "guild-images", filename)) {
-				if err := global.DownloadFile(i.Url, path.Join(global.ImagePath, "guild-images", filename), -1, map[string]string{}); err != nil {
+				if err := global.DownloadFile(i.Url, path.Join(global.ImagePath, "guild-images", filename), -1, nil); err != nil {
 					log.Warnf("下载频道图片时出现错误: %v", err)
 				}
 			}
@@ -776,12 +766,8 @@ func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
 				w.WriteString(i.ImageId)
 				w.WriteString(i.Url)
 			})
-			filename := hex.EncodeToString(i.Md5) + ".image"
-			if cache.EnableCacheDB {
-				cache.Image.Insert(i.Md5, data)
-			} else if !global.PathExists(path.Join(global.ImagePath, filename)) {
-				_ = os.WriteFile(path.Join(global.ImagePath, filename), data, 0o644)
-			}
+			cache.Image.Insert(i.Md5, data)
+
 		case *message.VoiceElement:
 			// todo: don't download original file?
 			i.Name = strings.ReplaceAll(i.Name, "{", "")
@@ -804,11 +790,7 @@ func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
 				w.Write(i.Uuid)
 			})
 			filename := hex.EncodeToString(i.Md5) + ".video"
-			if cache.EnableCacheDB {
-				cache.Video.Insert(i.Md5, data)
-			} else if !global.PathExists(path.Join(global.VideoPath, filename)) {
-				_ = os.WriteFile(path.Join(global.VideoPath, filename), data, 0o644)
-			}
+			cache.Video.Insert(i.Md5, data)
 			i.Name = filename
 			i.Url = bot.Client.GetShortVideoUrl(i.Uuid, i.Md5)
 		}
diff --git a/global/net.go b/global/net.go
index 541c54c..ce74edb 100644
--- a/global/net.go
+++ b/global/net.go
@@ -71,9 +71,6 @@ func DownloadFile(url, path string, limit int64, headers map[string]string) erro
 		req.Header.Set(k, v)
 	}
 
-	if _, ok := headers["User-Agent"]; !ok {
-		req.Header["User-Agent"] = []string{UserAgent}
-	}
 	resp, err := client.Do(req)
 	if err != nil {
 		return err
diff --git a/internal/cache/cache.go b/internal/cache/cache.go
index d4f4e7f..f410626 100644
--- a/internal/cache/cache.go
+++ b/internal/cache/cache.go
@@ -12,11 +12,6 @@ import (
 	"github.com/Mrs4s/go-cqhttp/internal/btree"
 )
 
-// todo(wdvxdr): always enable db-cache in v1.0.0
-
-// EnableCacheDB 是否启用 btree db缓存图片等
-var EnableCacheDB bool
-
 // Media Cache DBs
 var (
 	Image Cache
@@ -63,14 +58,12 @@ func (c *Cache) Delete(md5 []byte) {
 // Init 初始化 Cache
 func Init() {
 	node, ok := base.Database["cache"]
-	if !ok {
-		return
-	}
-	EnableCacheDB = true
 	var conf map[string]string
-	err := node.Decode(&conf)
-	if err != nil {
-		log.Fatalf("failed to read cache config: %v", err)
+	if ok {
+		err := node.Decode(&conf)
+		if err != nil {
+			log.Fatalf("failed to read cache config: %v", err)
+		}
 	}
 
 	var open = func(typ string, cache *Cache) {