diff --git a/redfish-core/include/redfish.hpp b/redfish-core/include/redfish.hpp
index 1c7b695..0a97150 100644
--- a/redfish-core/include/redfish.hpp
+++ b/redfish-core/include/redfish.hpp
@@ -93,6 +93,7 @@
 
         requestRoutesSystemLogServiceCollection(app);
         requestRoutesEventLogService(app);
+        requestRoutesPostCodesEntryAdditionalData(app);
 
         requestRoutesPostCodesLogService(app);
         requestRoutesPostCodesClear(app);
diff --git a/redfish-core/lib/log_services.hpp b/redfish-core/lib/log_services.hpp
index 943e08e..12ec64a 100644
--- a/redfish-core/lib/log_services.hpp
+++ b/redfish-core/lib/log_services.hpp
@@ -15,6 +15,7 @@
 */
 #pragma once
 
+#include "http_utility.hpp"
 #include "registries.hpp"
 #include "registries/base_message_registry.hpp"
 #include "registries/openbmc_message_registry.hpp"
@@ -33,6 +34,7 @@
 #include <error_messages.hpp>
 #include <registries/privilege_registry.hpp>
 
+#include <charconv>
 #include <filesystem>
 #include <optional>
 #include <string_view>
@@ -501,7 +503,7 @@
                     continue;
                 }
 
-                thisEntry["@odata.type"] = "#LogEntry.v1_7_0.LogEntry";
+                thisEntry["@odata.type"] = "#LogEntry.v1_8_0.LogEntry";
                 thisEntry["@odata.id"] = dumpPath + entryID;
                 thisEntry["Id"] = entryID;
                 thisEntry["EntryType"] = "Event";
@@ -655,7 +657,7 @@
                 }
 
                 asyncResp->res.jsonValue["@odata.type"] =
-                    "#LogEntry.v1_7_0.LogEntry";
+                    "#LogEntry.v1_8_0.LogEntry";
                 asyncResp->res.jsonValue["@odata.id"] = dumpPath + entryID;
                 asyncResp->res.jsonValue["Id"] = entryID;
                 asyncResp->res.jsonValue["EntryType"] = "Event";
@@ -1165,7 +1167,7 @@
 
     // Fill in the log entry with the gathered data
     logEntryJson = {
-        {"@odata.type", "#LogEntry.v1_4_0.LogEntry"},
+        {"@odata.type", "#LogEntry.v1_8_0.LogEntry"},
         {"@odata.id",
          "/redfish/v1/Systems/system/LogServices/EventLog/Entries/" +
              logEntryID},
@@ -1733,24 +1735,8 @@
                const std::string& param)
 
             {
-                std::string_view acceptHeader = req.getHeaderValue("Accept");
-                // The iterators in boost/http/rfc7230.hpp end the string if '/'
-                // is found, so replace it with arbitrary character '|' which is
-                // not part of the Accept header syntax.
-                std::string acceptStr = boost::replace_all_copy(
-                    std::string(acceptHeader), "/", "|");
-                boost::beast::http::ext_list acceptTypes{acceptStr};
-                bool supported = false;
-                for (const auto& type : acceptTypes)
-                {
-                    if ((type.first == "*|*") ||
-                        (type.first == "application|octet-stream"))
-                    {
-                        supported = true;
-                        break;
-                    }
-                }
-                if (!supported)
+                if (!http_helpers::isOctetAccepted(
+                        req.getHeaderValue("Accept")))
                 {
                     asyncResp->res.result(
                         boost::beast::http::status::bad_request);
@@ -1947,7 +1933,7 @@
 
     // Fill in the log entry with the gathered data
     bmcJournalLogEntryJson = {
-        {"@odata.type", "#LogEntry.v1_4_0.LogEntry"},
+        {"@odata.type", "#LogEntry.v1_8_0.LogEntry"},
         {"@odata.id", "/redfish/v1/Managers/bmc/LogServices/Journal/Entries/" +
                           bmcJournalLogEntryID},
         {"Name", "BMC Journal Entry"},
@@ -2982,7 +2968,7 @@
         // add to AsyncResp
         logEntryArray.push_back({});
         nlohmann::json& bmcLogEntry = logEntryArray.back();
-        bmcLogEntry = {{"@odata.type", "#LogEntry.v1_4_0.LogEntry"},
+        bmcLogEntry = {{"@odata.type", "#LogEntry.v1_8_0.LogEntry"},
                        {"@odata.id", "/redfish/v1/Systems/system/LogServices/"
                                      "PostCodes/Entries/" +
                                          postcodeEntryID},
@@ -2994,6 +2980,12 @@
                        {"EntryType", "Event"},
                        {"Severity", std::move(severity)},
                        {"Created", entryTimeStr}};
+        if (!std::get<std::vector<uint8_t>>(code.second).empty())
+        {
+            bmcLogEntry["AdditionalDataURI"] =
+                "/redfish/v1/Systems/system/LogServices/PostCodes/Entries/" +
+                postcodeEntryID + "/attachment";
+        }
     }
 }
 
@@ -3151,6 +3143,127 @@
             });
 }
 
+/**
+ * @brief Parse post code ID and get the current value and index value
+ *        eg: postCodeID=B1-2, currentValue=1, index=2
+ *
+ * @param[in]  postCodeID     Post Code ID
+ * @param[out] currentValue   Current value
+ * @param[out] index          Index value
+ *
+ * @return bool true if the parsing is successful, false the parsing fails
+ */
+inline static bool parsePostCode(const std::string& postCodeID,
+                                 uint64_t& currentValue, uint16_t& index)
+{
+    std::vector<std::string> split;
+    boost::algorithm::split(split, postCodeID, boost::is_any_of("-"));
+    if (split.size() != 2 || split[0].length() < 2 || split[0].front() != 'B')
+    {
+        return false;
+    }
+
+    const char* start = split[0].data() + 1;
+    const char* end = split[0].data() + split[0].size();
+    auto [ptrIndex, ecIndex] = std::from_chars(start, end, index);
+
+    if (ptrIndex != end || ecIndex != std::errc())
+    {
+        return false;
+    }
+
+    start = split[1].data();
+    end = split[1].data() + split[1].size();
+    auto [ptrValue, ecValue] = std::from_chars(start, end, currentValue);
+    if (ptrValue != end || ecValue != std::errc())
+    {
+        return false;
+    }
+
+    return true;
+}
+
+inline void requestRoutesPostCodesEntryAdditionalData(App& app)
+{
+    BMCWEB_ROUTE(app, "/redfish/v1/Systems/system/LogServices/PostCodes/"
+                      "Entries/<str>/attachment/")
+        .privileges(redfish::privileges::getLogEntry)
+        .methods(boost::beast::http::verb::get)(
+            [](const crow::Request& req,
+               const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+               const std::string& postCodeID) {
+                if (!http_helpers::isOctetAccepted(
+                        req.getHeaderValue("Accept")))
+                {
+                    asyncResp->res.result(
+                        boost::beast::http::status::bad_request);
+                    return;
+                }
+
+                uint64_t currentValue = 0;
+                uint16_t index = 0;
+                if (!parsePostCode(postCodeID, currentValue, index))
+                {
+                    messages::resourceNotFound(asyncResp->res, "LogEntry",
+                                               postCodeID);
+                    return;
+                }
+
+                crow::connections::systemBus->async_method_call(
+                    [asyncResp, postCodeID, currentValue](
+                        const boost::system::error_code ec,
+                        const std::vector<std::tuple<
+                            uint64_t, std::vector<uint8_t>>>& postcodes) {
+                        if (ec.value() == EBADR)
+                        {
+                            messages::resourceNotFound(asyncResp->res,
+                                                       "LogEntry", postCodeID);
+                            return;
+                        }
+                        if (ec)
+                        {
+                            BMCWEB_LOG_DEBUG << "DBUS response error " << ec;
+                            messages::internalError(asyncResp->res);
+                            return;
+                        }
+
+                        size_t value = static_cast<size_t>(currentValue) - 1;
+                        if (value == std::string::npos ||
+                            postcodes.size() < currentValue)
+                        {
+                            BMCWEB_LOG_ERROR << "Wrong currentValue value";
+                            messages::resourceNotFound(asyncResp->res,
+                                                       "LogEntry", postCodeID);
+                            return;
+                        }
+
+                        auto& [tID, code] = postcodes[value];
+                        if (code.empty())
+                        {
+                            BMCWEB_LOG_INFO << "No found post code data";
+                            messages::resourceNotFound(asyncResp->res,
+                                                       "LogEntry", postCodeID);
+                            return;
+                        }
+
+                        std::string_view strData(
+                            reinterpret_cast<const char*>(code.data()),
+                            code.size());
+
+                        asyncResp->res.addHeader("Content-Type",
+                                                 "application/octet-stream");
+                        asyncResp->res.addHeader("Content-Transfer-Encoding",
+                                                 "Base64");
+                        asyncResp->res.body() =
+                            crow::utility::base64encode(strData);
+                    },
+                    "xyz.openbmc_project.State.Boot.PostCode0",
+                    "/xyz/openbmc_project/State/Boot/PostCode0",
+                    "xyz.openbmc_project.State.Boot.PostCode", "GetPostCodes",
+                    index);
+            });
+}
+
 inline void requestRoutesPostCodesEntry(App& app)
 {
     BMCWEB_ROUTE(
@@ -3160,31 +3273,14 @@
             [](const crow::Request&,
                const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                const std::string& targetID) {
-                size_t bootPos = targetID.find('B');
-                if (bootPos == std::string::npos)
+                uint16_t bootIndex = 0;
+                uint64_t codeIndex = 0;
+                if (!parsePostCode(targetID, codeIndex, bootIndex))
                 {
                     // Requested ID was not found
                     messages::resourceMissingAtURI(asyncResp->res, targetID);
                     return;
                 }
-                std::string_view bootIndexStr(targetID);
-                bootIndexStr.remove_prefix(bootPos + 1);
-                uint16_t bootIndex = 0;
-                uint64_t codeIndex = 0;
-                size_t dashPos = bootIndexStr.find('-');
-
-                if (dashPos == std::string::npos)
-                {
-                    return;
-                }
-                std::string_view codeIndexStr(bootIndexStr);
-                bootIndexStr.remove_suffix(dashPos);
-                codeIndexStr.remove_prefix(dashPos + 1);
-
-                bootIndex = static_cast<uint16_t>(
-                    strtoul(std::string(bootIndexStr).c_str(), nullptr, 0));
-                codeIndex =
-                    strtoul(std::string(codeIndexStr).c_str(), nullptr, 0);
                 if (bootIndex == 0 || codeIndex == 0)
                 {
                     BMCWEB_LOG_DEBUG << "Get Post Code invalid entry string "