diff --git a/tools/power-utils/aei_updater.hpp b/tools/power-utils/aei_updater.hpp
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+/**
+ * Copyright © 2024 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "updater.hpp"
+
+namespace aeiUpdater
+{
+/**
+ * @class AeiUpdater
+ * @brief A class to handle firmware updates for the AEI PSUs.
+ *
+ * This class provides methods to update firmware by writing ISP keys,
+ * validating firmware files, and performing I2C communications. It includes
+ * functions to manage the update process, including downloading firmware blocks
+ * and verifying the update status.
+ */
+class AeiUpdater : public updater::Updater
+{
+  public:
+    AeiUpdater() = delete;
+    AeiUpdater(const AeiUpdater&) = delete;
+    AeiUpdater(AeiUpdater&&) = delete;
+    AeiUpdater& operator=(const AeiUpdater&) = delete;
+    AeiUpdater& operator=(AeiUpdater&&) = delete;
+    ~AeiUpdater() = default;
+
+    /**
+     * @brief Constructor for the AeiUpdater class.
+     *
+     * @param psuInventoryPath The path to the PSU's inventory in the system.
+     * @param devPath The device path for the PSU.
+     * @param imageDir The directory containing the firmware image files.
+     */
+    AeiUpdater(const std::string& psuInventoryPath, const std::string& devPath,
+               const std::string& imageDir) :
+        Updater(psuInventoryPath, devPath, imageDir)
+    {}
+
+    /**
+     * @brief Initiates the firmware update process.
+     *
+     * @return int Status code 0 for success or 1 for failure.
+     */
+    int doUpdate() override;
+
+  private:
+    /**
+     * @brief Writes an ISP (In-System Programming) key to initiate the update.
+     *
+     * @return bool True if successful, false otherwise.
+     */
+    bool writeIspKey();
+
+    /**
+     * @brief Writes the mode required for ISP to start firmware programming.
+     *
+     * @return bool True if successful, false otherwise.
+     */
+    bool writeIspMode();
+
+    /**
+     * @brief Resets the ISP status to prepare for a firmware update.
+     *
+     * @return bool True if successful, false otherwise.
+     */
+    bool writeIspStatusReset();
+
+    /**
+     * @brief Pointer to the I2C interface for communication
+     *
+     * This pointer is not owned by the class. The caller is responsible for
+     * ensuring that 'i2cInterface'  remains valid for the lifetime of this
+     * object. Ensure to check this pointer for null before use.
+     */
+    i2c::I2CInterface* i2cInterface;
+
+    /**
+     * @brief Stores byte-swapped indices for command processing
+     */
+    std::vector<uint8_t> byteSwappedIndex;
+};
+} // namespace aeiUpdater