diff --git a/tests/test_firmware.cpp b/tests/test_firmware.cpp
new file mode 100644
index 0000000..a0ce5ec
--- /dev/null
+++ b/tests/test_firmware.cpp
@@ -0,0 +1,192 @@
+#include "device/device_factory.hpp"
+#include "modbus_server_tester.hpp"
+#include "port/base_port.hpp"
+
+#include <fcntl.h>
+
+#include <xyz/openbmc_project/Software/Version/client.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace std::literals;
+using namespace testing;
+using SoftwareIntf =
+    sdbusplus::client::xyz::openbmc_project::software::Version<>;
+
+namespace TestIntf = phosphor::modbus::test;
+namespace ModbusIntf = phosphor::modbus::rtu;
+namespace PortIntf = phosphor::modbus::rtu::port;
+namespace PortConfigIntf = PortIntf::config;
+namespace DeviceIntf = phosphor::modbus::rtu::device;
+namespace DeviceConfigIntf = DeviceIntf::config;
+
+class MockPort : public PortIntf::BasePort
+{
+  public:
+    MockPort(sdbusplus::async::context& ctx,
+             const PortConfigIntf::Config& config,
+             const std::string& devicePath) : BasePort(ctx, config, devicePath)
+    {}
+};
+
+class TestFirmware : public DeviceIntf::DeviceFirmware
+{
+  public:
+    TestFirmware(sdbusplus::async::context& ctx,
+                 const DeviceConfigIntf::Config& config,
+                 PortIntf::BasePort& serialPort) :
+        DeviceIntf::DeviceFirmware(ctx, config, serialPort)
+    {}
+
+    auto getObjectPath() -> sdbusplus::message::object_path
+    {
+        return objectPath;
+    }
+};
+
+class FirmwareTest : public ::testing::Test
+{
+  public:
+    PortConfigIntf::Config portConfig;
+    static constexpr const char* clientDevicePath = "/tmp/ttyFirmwareTestPort0";
+    static constexpr const char* serverDevicePath = "/tmp/ttyFirmwareTestPort1";
+    static constexpr auto portName = "TestPort0";
+    static constexpr auto baudRate = 115200;
+    static constexpr const auto strBaudeRate = "b115200";
+    std::string deviceName;
+    std::string objectPath;
+    static constexpr auto serviceName =
+        "xyz.openbmc_project.TestModbusRTUFirmware";
+    static constexpr auto firmwareName = "TestVersion";
+    int socat_pid = -1;
+    sdbusplus::async::context ctx;
+    int fdClient = -1;
+    std::unique_ptr<TestIntf::ServerTester> serverTester;
+    int fdServer = -1;
+    std::unique_ptr<MockPort> mockPort;
+
+    FirmwareTest()
+    {
+        portConfig.name = portName;
+        portConfig.portMode = PortConfigIntf::PortMode::rs485;
+        portConfig.baudRate = baudRate;
+        portConfig.rtsDelay = 1;
+
+        deviceName = std::format("ResorviorPumpUnit_{}_{}",
+                                 TestIntf::testDeviceAddress, portName);
+        objectPath =
+            std::format("{}/{}", SoftwareIntf::namespace_path, deviceName);
+
+        std::string socatCmd = std::format(
+            "socat -x -v -d -d pty,link={},rawer,echo=0,parenb,{} pty,link={},rawer,echo=0,parenb,{} & echo $!",
+            serverDevicePath, strBaudeRate, clientDevicePath, strBaudeRate);
+
+        // Start socat in the background and capture its PID
+        FILE* fp = popen(socatCmd.c_str(), "r");
+        EXPECT_NE(fp, nullptr) << "Failed to start socat: " << strerror(errno);
+        EXPECT_GT(fscanf(fp, "%d", &socat_pid), 0);
+        pclose(fp);
+
+        // Wait for socat to start up
+        sleep(1);
+
+        fdClient = open(clientDevicePath, O_RDWR | O_NOCTTY | O_NONBLOCK);
+        EXPECT_NE(fdClient, -1)
+            << "Failed to open serial port " << clientDevicePath
+            << " with error: " << strerror(errno);
+
+        fdServer = open(serverDevicePath, O_RDWR | O_NOCTTY | O_NONBLOCK);
+        EXPECT_NE(fdServer, -1)
+            << "Failed to open serial port " << serverDevicePath
+            << " with error: " << strerror(errno);
+
+        ctx.request_name(serviceName);
+
+        mockPort =
+            std::make_unique<MockPort>(ctx, portConfig, clientDevicePath);
+
+        serverTester = std::make_unique<TestIntf::ServerTester>(ctx, fdServer);
+    }
+
+    ~FirmwareTest() noexcept override
+    {
+        if (fdClient != -1)
+        {
+            close(fdClient);
+            fdClient = -1;
+        }
+        if (fdServer != -1)
+        {
+            close(fdServer);
+            fdServer = -1;
+        }
+        kill(socat_pid, SIGTERM);
+    }
+
+    auto testFirmwareVersion(
+        std::string objectPath,
+        DeviceConfigIntf::FirmwareRegister firmwareRegister,
+        std::string expectedVersion) -> sdbusplus::async::task<void>
+    {
+        DeviceConfigIntf::DeviceFactoryConfig deviceFactoryConfig = {
+            {
+                .address = TestIntf::testDeviceAddress,
+                .parity = ModbusIntf::Parity::none,
+                .baudRate = baudRate,
+                .name = deviceName,
+                .portName = portConfig.name,
+                .inventoryPath = sdbusplus::message::object_path(
+                    "xyz/openbmc_project/Inventory/ResorviorPumpUnit"),
+                .sensorRegisters = {},
+                .statusRegisters = {},
+                .firmwareRegisters = {firmwareRegister},
+            },
+            DeviceConfigIntf::DeviceType::reservoirPumpUnit,
+            DeviceConfigIntf::DeviceModel::RDF040DSS5193E0,
+        };
+
+        auto deviceFirmware =
+            std::make_unique<TestFirmware>(ctx, deviceFactoryConfig, *mockPort);
+
+        co_await deviceFirmware->readVersionRegister();
+
+        EXPECT_TRUE(deviceFirmware->getObjectPath().str.starts_with(objectPath))
+            << "Invalid ObjectPath";
+
+        auto softwarePath = deviceFirmware->getObjectPath().str;
+
+        auto properties = co_await SoftwareIntf(ctx)
+                              .service(serviceName)
+                              .path(softwarePath)
+                              .properties();
+
+        EXPECT_EQ(properties.version, expectedVersion)
+            << "Firmware version mismatch";
+
+        co_return;
+    }
+
+    void SetUp() override
+    {
+        // Process request to read firmware version
+        ctx.spawn(serverTester->processRequests());
+    }
+};
+
+TEST_F(FirmwareTest, TestFirmwareVersion)
+{
+    const DeviceConfigIntf::FirmwareRegister firmwareRegister = {
+        .name = "",
+        .type = DeviceConfigIntf::FirmwareRegisterType::version,
+        .offset = TestIntf::testReadHoldingRegisterFirmwareVersionOffset,
+        .size = TestIntf::testReadHoldingRegisterFirmwareVersionCount};
+
+    ctx.spawn(testFirmwareVersion(
+        objectPath, firmwareRegister,
+        TestIntf::testReadHoldingRegisterFirmwareVersionStr));
+
+    ctx.spawn(sdbusplus::async::sleep_for(ctx, 1s) |
+              sdbusplus::async::execution::then([&]() { ctx.request_stop(); }));
+
+    ctx.run();
+}