diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/ChatType.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/ChatType.kt
index 14a3de7d5..d90acb586 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/ChatType.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/ChatType.kt
@@ -9,7 +9,7 @@ enum class ChatType(val internalID: Int) {
 
     CONTACT(1006),
 
-    //未知，推测为"组"
+    //推测为"群"
     TROOP(1),
     TROOP_HCTOPIC(1026),
 
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/groupimage/GroupImageRequest.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/groupimage/GroupImageRequest.kt
new file mode 100644
index 000000000..2f3bbfd51
--- /dev/null
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/groupimage/GroupImageRequest.kt
@@ -0,0 +1,2 @@
+package net.mamoe.mirai.qqandroid.network.protocol.packet.chat.groupimage
+
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x325Packet.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x352Packet.kt
similarity index 88%
rename from mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x325Packet.kt
rename to mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x352Packet.kt
index f70e0c4e9..ecf966f9a 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x325Packet.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/Cmd0x352Packet.kt
@@ -4,7 +4,7 @@ import kotlinx.serialization.SerialId
 import kotlinx.serialization.Serializable
 
 @Serializable
-internal class Cmd0x325Packet(
+internal class Cmd0x352Packet(
     @SerialId(1) val subCommand: Int, //2是GetImgUrlReq 1是UploadImgReq
     @SerialId(2) val uploadImgReq: UploadImgReq? = null,// optional
     @SerialId(3) val getImgUrlReq: GetImgUrlReq? = null,// optional
@@ -12,9 +12,9 @@ internal class Cmd0x325Packet(
     @SerialId(10) val networkType: Int = 5// 数据网络=5
 ) {
     companion object {
-        fun createByImageRequest(req: ImgReq, networkType: Int = 5): Cmd0x325Packet {
+        fun createByImageRequest(req: ImgReq, networkType: Int = 5): Cmd0x352Packet {
             if (req is UploadImgReq)
-                return Cmd0x325Packet(
+                return Cmd0x352Packet(
                     1,
                     req,
                     null,
@@ -22,7 +22,7 @@ internal class Cmd0x325Packet(
                     networkType
                 )
             if (req is GetImgUrlReq)
-                return Cmd0x325Packet(
+                return Cmd0x352Packet(
                     2,
                     null,
                     req,
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageDownPacket.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageDownPacket.kt
index 82581f54e..9c3bbea6e 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageDownPacket.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageDownPacket.kt
@@ -19,8 +19,8 @@ internal object ImageDownPacket : PacketFactory<ImageDownPacket.ImageDownPacketR
     operator fun invoke(client: QQAndroidClient, req: GetImgUrlReq): OutgoingPacket {
         return buildOutgingPacket(client, this._commandName, this._commandName, client.wLoginSigInfo.d2Key) {
             ProtoBuf.dump(
-                Cmd0x325Packet.serializer(),
-                Cmd0x325Packet.createByImageRequest(req)
+                Cmd0x352Packet.serializer(),
+                Cmd0x352Packet.createByImageRequest(req)
             )
         }
     }
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageRequest.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageRequest.kt
index c8313340f..0c6b54710 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageRequest.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageRequest.kt
@@ -2,35 +2,46 @@ package net.mamoe.mirai.qqandroid.network.protocol.packet.chat.image
 
 import kotlinx.serialization.SerialId
 import kotlinx.serialization.Serializable
+import net.mamoe.mirai.qqandroid.network.protocol.packet.EMPTY_BYTE_ARRAY
 import net.mamoe.mirai.utils.currentTimeSeconds
 
 interface ImgReq
 
 @Serializable
 internal class UploadImgReq(
-    @SerialId(1) val srcUni: Int,
-    @SerialId(2) val dstUni: Int,
-    @SerialId(3) val fileId: Int,
-    @SerialId(4) val fileMd5: ByteArray,
+    @SerialId(1) val srcUin: Int,
+    @SerialId(2) val dstUin: Int,
+    @SerialId(3) val fileId: Int = 0,//从0开始的自增数？貌似有一个连接就要自增1, 但是又会重置回0
+    @SerialId(4) val fileMd5: String,
     @SerialId(5) val fileSize: Int,
-    @SerialId(6) val fileName: String,
-    @SerialId(7) val srcTerm: Int,
-    @SerialId(8) val platformType: Int,
+    @SerialId(6) val fileName: String,//默认为md5+".jpg"
+    @SerialId(7) val srcTerm: Int = 5,
+    @SerialId(8) val platformType: Int = 9,
     @SerialId(9) val innerIP: Int = 0,
     @SerialId(10) val addressBook: Int = 0,//chatType == 1006为1 我觉得发0没问题
-    @SerialId(11) val retry: Int,
-    @SerialId(12) val buType: Int,
+    @SerialId(11) val retry: Int = 0,//default
+    @SerialId(12) val buType: Int,//1或96 不确定
     @SerialId(13) val imgOriginal: Int,//是否为原图
     @SerialId(14) val imgWidth: Int,
     @SerialId(15) val imgHeight: Int,
-    @SerialId(16) val imgType: Int,
+    @SerialId(16) val imgType: Int = 1000,
+    /**
+     * ImgType:
+     *  JPG:    1000
+     *  PNG:    1001
+     *  WEBP:   1002
+     *  BMP:    1005
+     *  GIG:    2000
+     *  APNG:   2001
+     *  SHARPP: 1004
+     * */
     @SerialId(17) val buildVer: String = "8.2.0.1296",//版本号
-    @SerialId(18) val fileIndex: ByteArray,
-    @SerialId(19) val fileStoreDays: Int,
-    @SerialId(20) val stepFlag: Int,
-    @SerialId(21) val rejectTryFast: Int,//bool
-    @SerialId(22) val srvUpload: Int,
-    @SerialId(23) val transferUrl: ByteArray
+    @SerialId(18) val fileIndex: ByteArray = EMPTY_BYTE_ARRAY,//default
+    @SerialId(19) val fileStoreDays: Int = 0,//default
+    @SerialId(20) val stepFlag: Int = 0,//default
+    @SerialId(21) val rejectTryFast: Int = 0,//bool
+    @SerialId(22) val srvUpload: Int = 1,//typeHotPic[1/2/3]
+    @SerialId(23) val transferUrl: ByteArray = EMPTY_BYTE_ARRAY//rawDownloadUrl, 如果没有就是EMPTY_BYTE_ARRAY
 ) : ImgReq
 
 @Serializable
diff --git a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageUpPacket.kt b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageUpPacket.kt
index 36cffad83..f8dd845d0 100644
--- a/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageUpPacket.kt
+++ b/mirai-core-qqandroid/src/commonMain/kotlin/net/mamoe/mirai/qqandroid/network/protocol/packet/chat/image/ImageUpPacket.kt
@@ -19,8 +19,8 @@ internal object ImageUpPacket : PacketFactory<ImageUpPacket.ImageUpPacketRespons
     operator fun invoke(client: QQAndroidClient, req: UploadImgReq): OutgoingPacket {
         return buildOutgingPacket(client, this._commandName, this._commandName, client.wLoginSigInfo.d2Key) {
             ProtoBuf.dump(
-                Cmd0x325Packet.serializer(),
-                Cmd0x325Packet.createByImageRequest(req)
+                Cmd0x352Packet.serializer(),
+                Cmd0x352Packet.createByImageRequest(req)
             )
         }
     }