diff --git a/client/builders.go b/client/builders.go
index ea01fe00..17f0a8d6 100644
--- a/client/builders.go
+++ b/client/builders.go
@@ -116,7 +116,7 @@ func (c *QQClient) buildLoginPacket() (uint16, []byte) {
 			t.Append(t544)
 		}
 	}
-	if c.Device().QImei36 != "" {
+	if c.Device().QImei16 != "" {
 		t.Append(tlv.T545([]byte(c.Device().QImei16)))
 	} else {
 		t.Append(tlv.T545([]byte(c.Device().IMEI)))
@@ -463,7 +463,7 @@ func (c *QQClient) buildRequestTgtgtNopicsigPacket() (uint16, []byte) {
 			tlv.T525(tlv.T536([]byte{0x01, 0x00})),
 		},
 	}
-	if c.Device().QImei36 != "" {
+	if c.Device().QImei16 != "" {
 		t.Append(tlv.T545([]byte(c.Device().QImei16)))
 	} else {
 		t.Append(tlv.T545([]byte(c.Device().IMEI)))
diff --git a/client/global.go b/client/global.go
index c13f4108..9ce718e7 100644
--- a/client/global.go
+++ b/client/global.go
@@ -110,7 +110,7 @@ func UpdateAppVersion(protocolType auth.ProtocolType, data []byte) error {
 	if _, ok := auth.AppVersions[protocolType]; !ok {
 		return errors.New("unknown protocol type: " + strconv.Itoa(int(protocolType)))
 	}
-	return auth.AppVersions[protocolType].ReadJson(data)
+	return auth.AppVersions[protocolType].UpdateFromJson(data)
 }
 
 func getSSOAddress(device *auth.Device) ([]netip.AddrPort, error) {
diff --git a/client/internal/auth/auth.go b/client/internal/auth/auth.go
index f2ca18b8..1a91754a 100644
--- a/client/internal/auth/auth.go
+++ b/client/internal/auth/auth.go
@@ -168,7 +168,7 @@ func (v *AppVersion) String() string {
 	return fmt.Sprintf("%s %s - %v", v.Protocol.String(), v.SortVersionName, v.BuildTime)
 }
 
-func (v *AppVersion) ReadJson(d []byte) error {
+func (v *AppVersion) UpdateFromJson(d []byte) error {
 	var f appVersionFile
 	if err := json.Unmarshal(d, &f); err != nil {
 		return errors.Wrap(err, "failed to unmarshal json message")