diff --git a/drivers/115/appver.go b/drivers/115/appver.go
new file mode 100644
index 00000000000..78e11a5443f
--- /dev/null
+++ b/drivers/115/appver.go
@@ -0,0 +1,43 @@
+package _115
+
+import (
+	driver115 "github.com/SheltonZhu/115driver/pkg/driver"
+	"github.com/alist-org/alist/v3/drivers/base"
+	log "github.com/sirupsen/logrus"
+)
+
+var (
+	md5Salt = "Qclm8MGWUv59TnrR0XPg"
+	appVer  = "27.0.5.7"
+)
+
+func (d *Pan115) getAppVersion() ([]driver115.AppVersion, error) {
+	result := driver115.VersionResp{}
+	resp, err := base.RestyClient.R().Get(driver115.ApiGetVersion)
+
+	err = driver115.CheckErr(err, &result, resp)
+	if err != nil {
+		return nil, err
+	}
+
+	return result.Data.GetAppVersions(), nil
+}
+
+func (d *Pan115) getAppVer() string {
+	// todo add some cache？
+	vers, err := d.getAppVersion()
+	if err != nil {
+		log.Warnf("[115] get app version failed: %v", err)
+		return appVer
+	}
+	for _, ver := range vers {
+		if ver.AppName == "win" {
+			return ver.Version
+		}
+	}
+	return appVer
+}
+
+func (d *Pan115) initAppVer() {
+	appVer = d.getAppVer()
+}
diff --git a/drivers/115/driver.go b/drivers/115/driver.go
index 2a1c8deef47..f6fb6b05618 100644
--- a/drivers/115/driver.go
+++ b/drivers/115/driver.go
@@ -3,6 +3,7 @@ package _115
 import (
 	"context"
 	"strings"
+	"sync"
 
 	driver115 "github.com/SheltonZhu/115driver/pkg/driver"
 	"github.com/alist-org/alist/v3/internal/driver"
@@ -16,8 +17,9 @@ import (
 type Pan115 struct {
 	model.Storage
 	Addition
-	client  *driver115.Pan115Client
-	limiter *rate.Limiter
+	client     *driver115.Pan115Client
+	limiter    *rate.Limiter
+	appVerOnce sync.Once
 }
 
 func (d *Pan115) Config() driver.Config {
@@ -29,6 +31,7 @@ func (d *Pan115) GetAddition() driver.Additional {
 }
 
 func (d *Pan115) Init(ctx context.Context) error {
+	d.appVerOnce.Do(d.initAppVer)
 	if d.LimitRate > 0 {
 		d.limiter = rate.NewLimiter(rate.Limit(d.LimitRate), 1)
 	}
diff --git a/drivers/115/util.go b/drivers/115/util.go
index ddddf6e9b15..7d5889af9f9 100644
--- a/drivers/115/util.go
+++ b/drivers/115/util.go
@@ -2,7 +2,9 @@ package _115
 
 import (
 	"bytes"
+	"crypto/md5"
 	"crypto/tls"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -26,12 +28,12 @@ import (
 	"github.com/pkg/errors"
 )
 
-var UserAgent = driver115.UA115Browser
+//var UserAgent = driver115.UA115Browser
 
 func (d *Pan115) login() error {
 	var err error
 	opts := []driver115.Option{
-		driver115.UA(UserAgent),
+		driver115.UA(d.getUA()),
 		func(c *driver115.Pan115Client) {
 			c.Client.SetTLSClientConfig(&tls.Config{InsecureSkipVerify: conf.Conf.TlsInsecureSkipVerify})
 		},
@@ -73,25 +75,11 @@ func (d *Pan115) getFiles(fileId string) ([]FileObj, error) {
 	return res, nil
 }
 
-const (
-	appVer = "27.0.3.7"
-)
-
-func (c *Pan115) getAppVer() string {
-	// todo add some cache？
-	vers, err := c.client.GetAppVersion()
-	if err != nil {
-		return appVer
-	}
-	for _, ver := range vers {
-		if ver.AppName == "win" {
-			return ver.Version
-		}
-	}
-	return appVer
+func (d *Pan115) getUA() string {
+	return fmt.Sprintf("Mozilla/5.0 115Browser/%s", appVer)
 }
 
-func (c *Pan115) DownloadWithUA(pickCode, ua string) (*driver115.DownloadInfo, error) {
+func (d *Pan115) DownloadWithUA(pickCode, ua string) (*driver115.DownloadInfo, error) {
 	key := crypto.GenerateKey()
 	result := driver115.DownloadResp{}
 	params, err := utils.Json.Marshal(map[string]string{"pickcode": pickCode})
@@ -105,10 +93,10 @@ func (c *Pan115) DownloadWithUA(pickCode, ua string) (*driver115.DownloadInfo, e
 	reqUrl := fmt.Sprintf("%s?t=%s", driver115.ApiDownloadGetUrl, driver115.Now().String())
 	req, _ := http.NewRequest(http.MethodPost, reqUrl, bodyReader)
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
-	req.Header.Set("Cookie", c.Cookie)
+	req.Header.Set("Cookie", d.Cookie)
 	req.Header.Set("User-Agent", ua)
 
-	resp, err := c.client.Client.GetClient().Do(req)
+	resp, err := d.client.Client.GetClient().Do(req)
 	if err != nil {
 		return nil, err
 	}
@@ -146,6 +134,13 @@ func (c *Pan115) DownloadWithUA(pickCode, ua string) (*driver115.DownloadInfo, e
 	return nil, driver115.ErrUnexpected
 }
 
+func (c *Pan115) GenerateToken(fileID, preID, timeStamp, fileSize, signKey, signVal string) string {
+	userID := strconv.FormatInt(c.client.UserID, 10)
+	userIDMd5 := md5.Sum([]byte(userID))
+	tokenMd5 := md5.Sum([]byte(md5Salt + fileID + fileSize + signKey + signVal + userID + timeStamp + hex.EncodeToString(userIDMd5[:]) + appVer))
+	return hex.EncodeToString(tokenMd5[:])
+}
+
 func (d *Pan115) rapidUpload(fileSize int64, fileName, dirID, preID, fileID string, stream model.FileStreamer) (*driver115.UploadInitResp, error) {
 	var (
 		ecdhCipher   *cipher.EcdhCipher
@@ -165,7 +160,7 @@ func (d *Pan115) rapidUpload(fileSize int64, fileName, dirID, preID, fileID stri
 	userID := strconv.FormatInt(d.client.UserID, 10)
 	form := url.Values{}
 	form.Set("appid", "0")
-	form.Set("appversion", d.getAppVer())
+	form.Set("appversion", appVer)
 	form.Set("userid", userID)
 	form.Set("filename", fileName)
 	form.Set("filesize", fileSizeStr)
@@ -186,7 +181,7 @@ func (d *Pan115) rapidUpload(fileSize int64, fileName, dirID, preID, fileID stri
 		}
 
 		form.Set("t", t.String())
-		form.Set("token", d.client.GenerateToken(fileID, preID, t.String(), fileSizeStr, signKey, signVal))
+		form.Set("token", d.GenerateToken(fileID, preID, t.String(), fileSizeStr, signKey, signVal))
 		if signKey != "" && signVal != "" {
 			form.Set("sign_key", signKey)
 			form.Set("sign_val", signVal)