diff --git a/include/HFlashServer.h b/include/HFlashServer.h
index 967ccc2..ac18dcc 100644
--- a/include/HFlashServer.h
+++ b/include/HFlashServer.h
@@ -235,6 +235,16 @@ uint8_t HFlashWrite(HFlashAddr_t addr, const void *data, uint32_t size);
  */
 uint8_t HFlashWriteOffset(HFlashAddr_t addr, uint32_t offset, const void *data, uint32_t size);
 
+/**
+ * @brief HFlashWriteOffsetValue 写入从原始地址偏移后的地方写入相同值, 超出原未使用部分会自动写入0填充
+ * @param addr 需要注册的地址
+ * @param offset 地址偏移
+ * @param value 写入值
+ * @param size 写入数据大小
+ * @return 1: 写入成功 0: 写入失败
+ */
+uint8_t HFlashWriteOffsetValue(HFlashAddr_t addr, uint32_t offset, uint8_t value, uint32_t size);
+
 /**
  * @brief HFlashWriteRawOffset 写入原始地址偏移后的位置写入Flash数据, 超出部分不自动填充, 仅提供给一些库使用, 正常情况请勿使用
  * @param addr 需要注册的地址
@@ -322,6 +332,17 @@ typedef void (*HFlashUpdateVersionCallback)(HFlashAddr_t addr, uint16_t oldVersi
  */
 void HFlashUpdateVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData);
 
+/**
+ * @brief HFlashUpgradeVersion 升级版本号, 仅在版本升高时触发回调
+ * 如果旧版本比新版本大或相同, 不处理
+ * 如果旧版本比新版本小, 会更新记录版本并触发回调, 可用于把数据升级到新版本
+ * @param addr 需要注册的地址
+ * @param newVersion 新版本号
+ * @param callback 回调函数
+ * @param userData 用户数据
+ */
+void HFlashUpgradeVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData);
+
 /**
  * @brief HFlashDefaultUpdateVersion 默认更新版本号回调, 直接删除旧数据
  * @param addr 需要注册的地址
@@ -344,6 +365,14 @@ void HFlashDeleteData(HFlashAddr_t addr);
  */
 uint32_t HFlashGetUseSize(HFlashAddr_t addr);
 
+/**
+ * @brief HFlashSetUseSize 设置Flash数据的使用大小
+ * @param addr 需要注册的地址
+ * @param size 使用大小
+ * @return 1: 设置成功 0: 设置失败
+ */
+uint8_t HFlashSetUseSize(HFlashAddr_t addr, uint32_t size);
+
 /**
  * @brief HFlashGetSize 获取Flash数据的大小
  * @param addr 需要注册的地址
diff --git a/src/HFlashServer.c b/src/HFlashServer.c
index fa26d7e..9c81b3c 100644
--- a/src/HFlashServer.c
+++ b/src/HFlashServer.c
@@ -521,16 +521,16 @@ static void SyncBackup()
         sBackupTimer = HTIMER_INVALID;
     }
 
-    for (uint16_t i = 0; i < HVectorGetUseLen(sNeedBackupOffset); ++i) {
-        const uint32_t addr = HVectorGetData(sNeedBackupOffset, i);
+    for (HVectorLenType remain = HVectorGetUseLen(sNeedBackupOffset); remain > 0; --remain) {
+        const uint32_t addr = HVectorGetData(sNeedBackupOffset, remain - 1);
         if (SyncBackupRange(addr, HFLASH_BLOCK_SIZE) == 0) {
             LogE("RestorePage faild, addr[0x%08x]", addr);
             StartSyncBackupTimer();
             return ;
         }
-    }
 
-    HVectorClear(sNeedBackupOffset);
+        HVectorSetUseLen(sNeedBackupOffset, remain - 1);
+    }
 
     // 备份页表数据
     const uint32_t crcValue = GetBackupCrc32(AdjustPageAddr(sInfo.pageAddr), AdjustPageByte(sPageInfo.useNum));
@@ -1706,6 +1706,40 @@ uint8_t HFlashWriteOffset(HFlashAddr_t addr, uint32_t offset, const void *data,
     return WriteOffset(addr, offset, data, size, 1);
 }
 
+uint8_t HFlashWriteOffsetValue(HFlashAddr_t addr, uint32_t offset, uint8_t value, uint32_t size)
+{
+    uint8_t result = 0;
+    HFlashCacheInfo *cache = FindCache(addr);
+    if (cache == NULL) {
+        FATAL_ERROR("addr[0x%08x] not register", addr);
+        return result;
+    }
+
+    const uint32_t useSize = offset + size;
+    if (cache->info.size < useSize) {
+        FATAL_ERROR("addr[0x%08x] size[%d] overflow", addr, useSize);
+        return result;
+    }
+
+    if (cache->info.useSize < useSize) {
+        if (cache->info.useSize < offset) {
+            WriteFlashValue(addr + cache->info.useSize, offset - cache->info.useSize, 0);
+        }
+
+        cache->info.useSize = useSize;
+    }
+
+    result = WriteFlashValue(addr + offset, size, value);
+    cache->waitCrc = 1;
+    WriteCachePage(cache);
+
+    if (IsProtect(addr, size)) {
+        AddBackupOffsetAddr(addr, offset, size);
+    }
+
+    return result;
+}
+
 uint8_t HFlashWriteRawOffset(HFlashAddr_t addr, uint32_t offset, const void *data, uint32_t size)
 {
     return WriteOffset(addr, offset, data, size, 0);
@@ -1818,7 +1852,7 @@ uint8_t HFlashRawRead(HFlashAddr_t addr, void *data, uint32_t size)
     return ReadFlashCall(addr, data, size);
 }
 
-void HFlashUpdateVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData)
+static void UpdateVersionInner(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData, uint8_t onlyUpgrade)
 {
     HFlashCacheInfo *cache = FindCache(addr);
     if (cache == NULL) {
@@ -1830,6 +1864,10 @@ void HFlashUpdateVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVer
         return ;
     }
 
+    if (onlyUpgrade && (newVersion < cache->info.version)) {
+        return ;
+    }
+
     const uint16_t oldVersion = cache->info.version;
     cache->info.version = newVersion;
     if (callback) {
@@ -1839,6 +1877,16 @@ void HFlashUpdateVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVer
     WriteCachePage(cache);
 }
 
+void HFlashUpdateVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData)
+{
+    UpdateVersionInner(addr, newVersion, callback, userData, 0);
+}
+
+void HFlashUpgradeVersion(HFlashAddr_t addr, uint16_t newVersion, HFlashUpdateVersionCallback callback, void *userData)
+{
+    UpdateVersionInner(addr, newVersion, callback, userData, 1);
+}
+
 void HFlashDefaultUpdateVersion(HFlashAddr_t addr, uint16_t oldVersion, uint16_t newVersion, void *userData)
 {
     (void)(oldVersion);
@@ -1850,14 +1898,7 @@ void HFlashDefaultUpdateVersion(HFlashAddr_t addr, uint16_t oldVersion, uint16_t
 
 void HFlashDeleteData(HFlashAddr_t addr)
 {
-    HFlashCacheInfo *cache = FindCache(addr);
-    if (cache == NULL) {
-        FATAL_ERROR("addr[0x%08x] not register", addr);
-        return ;
-    }
-
-    cache->info.useSize = 0;
-    WriteCachePage(cache);
+    HFlashSetUseSize(addr, 0);
 }
 
 uint32_t HFlashGetUseSize(HFlashAddr_t addr)
@@ -1871,6 +1912,28 @@ uint32_t HFlashGetUseSize(HFlashAddr_t addr)
     return cache->info.useSize;
 }
 
+uint8_t HFlashSetUseSize(HFlashAddr_t addr, uint32_t size)
+{
+    HFlashCacheInfo *cache = FindCache(addr);
+    if (cache == NULL) {
+        LogE("addr[0x%08x] not register", addr);
+        return 0;
+    }
+
+    if (size > cache->info.size) {
+        LogE("addr[0x%08x] useSize[%d] overflow size[%d]", addr, size, cache->info.size);
+        return 0;
+    }
+
+    cache->info.useSize = size;
+    cache->info.crc32 = GetFlashCrc32(addr, size);
+    WriteCachePage(cache);
+    if (size) {
+        AddBackupAddr(addr, size);
+    }
+    return 1;
+}
+
 uint32_t HFlashGetSize(HFlashAddr_t addr)
 {
     HFlashCacheInfo *cache = FindCache(addr);
diff --git a/src/HRingBuffer.c b/src/HRingBuffer.c
index 4c39289..27c0683 100644
--- a/src/HRingBuffer.c
+++ b/src/HRingBuffer.c
@@ -54,6 +54,16 @@ static inline HRingBufferLenType GetRingBufferTypeSize(const HRingBufferType *ri
     return 0;
 }
 
+static inline uint8_t GetRingBufferTypeShift(const HRingBufferType *ringBuffer) {
+    switch(GetRingBufferType(ringBuffer)) {
+        case kHRingBufferFlag8: return 0;
+        case kHRingBufferFlag16: return 1;
+        case kHRingBufferFlag32: return 2;
+    }
+
+    return 0xFF;
+}
+
 static inline HRingBufferDataType GetRingBufferData(const HRingBufferType *ringBuffer, HRingBufferLenType pos) {
     switch(GetRingBufferType(ringBuffer)) {
         case kHRingBufferFlag8: return ((const _HRingBuffer8 *)ringBuffer)->data[pos]; break;
@@ -199,29 +209,40 @@ HRingBufferDataType HRingBufferPopData(HRingBufferType* buffer) {
 // 获取环状缓冲区数据, 返回获取的数据长度
 HRingBufferLenType HRingBufferGetByteDatas(HRingBufferType* buffer, uint8_t *data, HRingBufferLenType len)
 {
-    if (HRingBufferGetUseLen(buffer) == 0) {
+    const HRingBufferLenType useLen = HRingBufferGetUseLen(buffer);
+    if (useLen == 0) {
         return 0;
     }
 
     _HRingBufferBase *base = (_HRingBufferBase *)buffer;
-    const HRingBufferLenType typeSize = GetRingBufferTypeSize(buffer);
-    const HRingBufferLenType startPos = base->start;
-    const HRingBufferLenType endPos = base->end;
-    int copyLen = (endPos - startPos) * typeSize;
-    if (startPos >= endPos) {
-        copyLen = (base->len - startPos) * typeSize;
-    }
-
-    if (copyLen > len) {
-        copyLen = len / typeSize * typeSize;
-    }
-
-    if (copyLen == 0) {
+    const uint8_t typeShift = GetRingBufferTypeShift(buffer);
+    if (data == NULL || typeShift > 2) {
         return 0;
     }
 
-    memcpy(data, GetRingByteData(buffer, startPos), copyLen);
-    AdjustReadPos(buffer, copyLen / typeSize);
+    HRingBufferLenType copyElems = len >> typeShift;
+    if (copyElems > useLen) {
+        copyElems = useLen;
+    }
+
+    if (copyElems == 0) {
+        return 0;
+    }
+
+    const HRingBufferLenType startPos = base->start;
+    HRingBufferLenType firstCopyElems = base->len - startPos;
+    if (firstCopyElems > copyElems) {
+        firstCopyElems = copyElems;
+    }
+
+    const HRingBufferLenType copyLen = copyElems << typeShift;
+    const HRingBufferLenType firstCopyLen = firstCopyElems << typeShift;
+    memcpy(data, GetRingByteData(buffer, startPos), firstCopyLen);
+    if (firstCopyLen < copyLen) {
+        memcpy(data + firstCopyLen, GetRingByteData(buffer, 0), copyLen - firstCopyLen);
+    }
+
+    AdjustReadPos(buffer, copyElems);
     return copyLen;
 }