diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index d2aa6f4..3723ec6 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -125,6 +125,8 @@ set(headers
     displays/menus/mosfetsmenu.h
     displays/menus/motorfeedbackdebugmenu.h
     displays/menus/motorstatedebugmenu.h
+    displays/menus/otamenu.h
+    displays/menus/selectotabuildmenu.h
     displays/menus/presetsmenu.h
     displays/menus/profilesmenu.h
     displays/menus/selectbatterytypemenu.h
diff --git a/main/buildserver.h b/main/buildserver.h
index 1b370cc..4a8da09 100644
--- a/main/buildserver.h
+++ b/main/buildserver.h
@@ -1,5 +1,14 @@
 #pragma once
 
+#include <ArduinoJson.h>
+#include <cpputils.h>
+#include <cleanuphelper.h>
+
+// 3rdparty lib includes
+#include <asynchttprequest.h>
+#include <delayedconstruction.h>
+
+// local includes
 #include "globals.h"
 #include "esp_log.h"
 #include "fmt/core.h"
@@ -7,39 +16,169 @@
 // esp-idf
 #include "esp_http_client.h"
 
-/*
- * ToDo:
- *  - get_ota_decriptor_json_string => returns std::string, takes std::string url
- */
 namespace {
+    void buildMenuFromJson(std::string json);
+    void buildMenuRequestError(std::string error);
+    static std::string url_for_hashes = "";
+    static std::string url_for_latest = "";
+    static std::array<std::string, 10> availableVersions = {};
+    bool request_running = false;
+    uint16_t request_failed = false;
+    bool parsing_finished = false;
+    cpputils::DelayedConstruction<AsyncHttpRequest> request;
 
-std::string ota_descriptor_json = "";
-
-std::string get_ota_url_from_index(uint16_t index)
-{
-    if (index < stringSettings.otaServers.size())
+    std::string get_ota_url_from_index(uint16_t index)
     {
-        auto otaServer = stringSettings.otaServers[index];
-        if (!otaServer.url.empty())
+        if (index < stringSettings.otaServers.size())
         {
-            return otaServer.url;
+            auto otaServer = stringSettings.otaServers[index];
+            if (!otaServer.url.empty())
+            {
+                return otaServer.url;
+            }
+            else
+            {
+                ESP_LOGE("BOBBY", "Cannot get OTA url: otaServer.url is empty");
+                return "";
+            }
         }
         else
         {
-            ESP_LOGE("BOBBY", "Cannot get OTA url: otaServer.url is empty");
+            ESP_LOGE("BOBBY", "Cannot get OTA url: Invalid Index");
             return "";
         }
     }
-    else
+
+    uint16_t count_available_buildserver()
     {
-        ESP_LOGE("BOBBY", "Cannot get OTA url: Invalid Index");
-        return "";
+        uint16_t count = 0;
+        for (const auto &otaServer : stringSettings.otaServers) {
+            if (!otaServer.url.empty()) count++;
+        }
+        return count;
+    }
+
+    std::string get_hash_url(std::string hash)
+    {
+        return fmt::format(url_for_hashes, hash);
+    }
+
+    std::string get_latest_url()
+    {
+        return url_for_latest;
+    }
+
+    std::string fix_url(std::string url)
+    {
+        std::string fixed_url = url;
+        if (fixed_url.find("http") == std::string::npos)
+        {
+            fixed_url = fmt::format("http://{}", fixed_url);
+        }
+        return fixed_url;
+    }
+
+    std::string get_descriptor_url(std::string base_url)
+    {
+        std::string url = fix_url(base_url);
+        return fmt::format("{}/otaDescriptor?username={}", url, OTA_USERNAME);
+    }
+
+    void parse_response_into_variables(std::string response)
+    {
+        StaticJsonDocument<512> doc;
+
+        if (const auto error = deserializeJson(doc, response))
+        {
+            ESP_LOGE("BOBBY", "Error parsing server-response => %s", response.c_str());
+            return;
+        }
+
+        JsonObject availableVersionsObject = doc["availableVersions"];
+        for (JsonPair kv : availableVersionsObject)
+        {
+            static auto index = 0;
+            auto hash = kv.key().c_str();
+            if (index > availableVersions.size())
+            {
+                break;
+            }
+            availableVersions.at(index) = hash;
+            index++;
+        }
+
+        url_for_latest = doc["latest"].as<std::string>();
+        url_for_hashes = doc["url"].as<std::string>();
+        parsing_finished = true;
+    }
+
+    void setup_request()
+    {
+        if (!request.constructed())
+            request.construct("ota-descriptor-request", espcpputils::CoreAffinity::Core0);
+    }
+
+    void start_descriptor_request(std::string server_base_url)
+    {
+        if (!request.constructed())
+        {
+            ESP_LOGW("BOBBY", "request is im oarsch");
+            return;
+        }
+
+        const auto url = get_descriptor_url(server_base_url);
+        ESP_LOGD("BOBBY", "requesting data...");
+        if (const auto result = request->start(url); !result)
+        {
+            ESP_LOGW("BOBBY", "request start failed");
+            return;
+        }
+        request_running = true;
+        request_failed = false;
+        url_for_latest.clear();
+        url_for_hashes.clear();
+        availableVersions = {};
+        parsing_finished = false;
+    }
+
+    void check_descriptor_request()
+    {
+        if (!request.constructed())
+        {
+            ESP_LOGW("BOBBY", "request is im oarsch");
+            request_running = false;
+            request_failed = true;
+            return;
+        }
+
+        if (!request->finished())
+        {
+            // ESP_LOGW("BOBBY", "Request has not finished yet.");
+            return;
+        }
+
+        const auto helper = cpputils::makeCleanupHelper([](){ request->clearFinished(); });
+        const std::string content = std::move(request->takeBuffer());
+
+        if (const auto result = request->result(); !result)
+        {
+            ESP_LOGW("BOBBY", "request failed: %.*s", result.error().size(), result.error().data());
+            std::string failed_str = result.error().data();
+            auto statuscode = failed_str.substr(failed_str.length() - 3);
+            request_running = false;
+            request_failed = std::stoi(statuscode);
+            return;
+        }
+
+        const auto result = request->result();
+        ESP_LOGW("BOBBY", "Request finished: %s", content.c_str());
+        parse_response_into_variables(content);
+        request_running = false;
+        request_failed = false;
+    }
+
+    bool get_request_running()
+    {
+        return request_running;
     }
 }
-
-void get_ota_descriptor(std::string url)
-{
-    auto descriptorUrl = fmt::format("{}/otaDescriptor", url);
-    // Make GET request to descriptorUrl and store json somewhere to be decoded when needed, for example in ota_descriptor_json (buildserver.h:16)
-}
-}
diff --git a/main/displays/menus/mainmenu.h b/main/displays/menus/mainmenu.h
index f46fde9..5b76179 100644
--- a/main/displays/menus/mainmenu.h
+++ b/main/displays/menus/mainmenu.h
@@ -46,7 +46,7 @@ class Lockscreen;
 class MosfetsMenu;
 class DemosMenu;
 class GarageDisplay;
-class UpdateDisplay;
+class OtaMenu;
 class PoweroffDisplay;
 class DebugMenu;
 class BatteryMenu;
@@ -97,7 +97,7 @@ public:
     if (SHOWITEM)   { constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_GARAGE>,       SwitchScreenAction<GarageDisplay>>>(); }
 #endif
 #ifdef FEATURE_OTA
-    if (SHOWITEM)   { constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_UPDATE>,       SwitchScreenAction<UpdateDisplay>, StaticMenuItemIcon<&bobbyicons::update>>>(); }
+    if (SHOWITEM)   { constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_UPDATE>,       SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&bobbyicons::update>>>(); }
 #endif
                          constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_POWEROFF>,     SwitchScreenAction<PoweroffDisplay>, StaticMenuItemIcon<&bobbyicons::poweroff>>>();
                          constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_REBOOT>,       RebootAction, StaticMenuItemIcon<&bobbyicons::reboot>>>();
diff --git a/main/displays/menus/otamenu.h b/main/displays/menus/otamenu.h
new file mode 100644
index 0000000..85d3a19
--- /dev/null
+++ b/main/displays/menus/otamenu.h
@@ -0,0 +1,39 @@
+#pragma once
+
+// local includes
+#include "menudisplay.h"
+#include "utils.h"
+#include "actions/dummyaction.h"
+#include "icons/back.h"
+#include "icons/update.h"
+#include "icons/presets.h"
+#include "texts.h"
+
+
+// forward declares
+namespace {
+class MainMenu;
+class UpdateDisplay;
+class SelectBuildMenu;
+class SelectBuildServerMenu;
+} // namespace
+
+using namespace espgui;
+
+namespace {
+
+class OtaMenu :
+    public MenuDisplay,
+    public StaticText<TEXT_UPDATE>,
+    public BackActionInterface<SwitchScreenAction<MainMenu>>
+{
+public:
+    OtaMenu()
+    {
+        constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_SELECTBUILD>,             SwitchScreenAction<SelectBuildMenu>, StaticMenuItemIcon<&bobbyicons::presets>>>();
+        constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_UPDATENOW>,               SwitchScreenAction<UpdateDisplay>, StaticMenuItemIcon<&bobbyicons::update>>>();
+        constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_SELECTBUILDSERVERMENU>,   SwitchScreenAction<SelectBuildServerMenu>>>();
+        constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                    SwitchScreenAction<MainMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+    }
+};
+} // namespace
diff --git a/main/displays/menus/selectotabuildmenu.h b/main/displays/menus/selectotabuildmenu.h
new file mode 100644
index 0000000..dace7a7
--- /dev/null
+++ b/main/displays/menus/selectotabuildmenu.h
@@ -0,0 +1,147 @@
+#pragma once
+
+#include <espwifistack.h>
+#include "esp_log.h"
+#include "fmt/core.h"
+
+// local includes
+#include "menudisplay.h"
+#include "utils.h"
+#include "actions/dummyaction.h"
+#include "icons/back.h"
+#include "icons/update.h"
+#include "texts.h"
+
+#include "buildserver.h"
+#include "globals.h"
+
+#define MESSAGE(text) constructMenuItem<makeComponent<MenuItem, StaticText<text>, DummyAction>>()
+
+// forward declares
+namespace {
+class OtaMenu;
+} // namespace
+
+using namespace espgui;
+
+namespace {
+
+// ToDo: if (request_failed) => MESSAGE("An error occurred")
+
+class VersionMenuItem : public MenuItem
+{
+public:
+    std::string text() const override { return m_hash; }
+    void setHash(std::string &&hash) { m_hash = std::move(hash); }
+    void setHash(const std::string &hash) { m_hash = hash; }
+    void setUrl(std::string &&url) { m_url = std::move(url); }
+    void setUrl(const std::string &url) { m_url = url; }
+
+    void triggered() override
+    {
+        stringSettings.otaUrl = m_url;
+        saveSettings();
+    }
+private:
+    std::string m_url;
+    std::string m_hash;
+};
+
+class SelectBuildMenu :
+    public MenuDisplay,
+    public StaticText<TEXT_SELECTBUILD>,
+    public BackActionInterface<SwitchScreenAction<OtaMenu>>
+{
+    using Base = MenuDisplay;
+public:
+    void update() override;
+    void buildMenuFromJson();
+    void buildMenuRequestError(std::string error);
+    SelectBuildMenu()
+    {
+        if (count_available_buildserver() < 1)
+        {
+            MESSAGE(TEXT_OTA_NOBUILDSERVERAVAILABLE);
+            constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+        }
+        else if (stringSettings.otaServerUrl.empty())
+        {
+            MESSAGE(TEXT_OTA_NOBUILDSERVERSELECTED);
+            constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+        }
+        else
+        {
+            const auto staStatus = wifi_stack::get_sta_status();
+            if (staStatus != wifi_stack::WiFiStaStatus::CONNECTED)
+            {
+                MESSAGE(TEXT_OTA_NOCONNECTION);
+                constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+            }
+            else
+            {
+                std::string serverUrl = stringSettings.otaServerUrl;
+                if (serverUrl.substr(serverUrl.length() - 4) == ".bin")
+                {
+                    auto &menuitem = constructMenuItem<VersionMenuItem>();
+                    std::size_t last_slash_index = serverUrl.find_last_of("/");
+                    auto filename = serverUrl.substr(last_slash_index+1);
+                    auto hash = filename.substr(0, filename.length() - 4);
+                    menuitem.setHash(hash);
+                    menuitem.setUrl(fix_url(serverUrl));
+                    constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+                }
+                else
+                {
+                    setup_request();
+                    start_descriptor_request(serverUrl);
+                }
+            }
+        }
+    }
+};
+
+void SelectBuildMenu::update()
+{
+    if(get_request_running())
+    {
+        check_descriptor_request();
+        if (request_failed)
+        {
+            this->buildMenuRequestError(fmt::format("Error: {}", request_failed));
+            request_failed = false;
+        }
+    }
+
+    if (parsing_finished)
+    {
+        parsing_finished = false;
+        if (!availableVersions.empty())
+        {
+            this->buildMenuFromJson();
+        }
+    }
+    Base::update();
+}
+
+void SelectBuildMenu::buildMenuFromJson()
+{
+    auto &latest = constructMenuItem<VersionMenuItem>();
+    latest.setHash("latest");
+    latest.setUrl(url_for_latest);
+
+    for (const std::string &hash : availableVersions)
+    {
+        auto &menuitem = constructMenuItem<VersionMenuItem>();
+        menuitem.setHash(hash);
+        menuitem.setUrl(fmt::format(url_for_hashes, hash));
+    }
+    constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+}
+
+void SelectBuildMenu::buildMenuRequestError(std::string error)
+{
+    auto &item = constructMenuItem<makeComponent<MenuItem, ChangeableText, DummyAction>>();
+    item.setTitle(error);
+    constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_BACK>,                SwitchScreenAction<OtaMenu>, StaticMenuItemIcon<&espgui::icons::back>>>();
+}
+} // namespace
diff --git a/main/displays/updatedisplay.h b/main/displays/updatedisplay.h
index 378f51f..6e0a60c 100644
--- a/main/displays/updatedisplay.h
+++ b/main/displays/updatedisplay.h
@@ -23,12 +23,12 @@
 #include "ota.h"
 
 namespace {
-class MainMenu;
+class OtaMenu;
 }
 
 namespace {
 #ifdef FEATURE_OTA
-class UpdateDisplay : public Display, public BackActionInterface<SwitchScreenAction<MainMenu>>
+class UpdateDisplay : public Display, public BackActionInterface<SwitchScreenAction<OtaMenu>>
 {
 public:
     void start() override;
diff --git a/main/main.cpp b/main/main.cpp
index 39f794e..1b5f967 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -106,6 +106,8 @@ using namespace std::chrono_literals;
 #include "displays/statusdisplay.h"
 #ifdef FEATURE_OTA
 #include "displays/updatedisplay.h"
+#include "displays/menus/otamenu.h"
+#include "displays/menus/selectotabuildmenu.h"
 #endif
 #include "screens.h"
 #include "dpad.h"
diff --git a/main/texts.h b/main/texts.h
index 6ad8451..3d85cb8 100644
--- a/main/texts.h
+++ b/main/texts.h
@@ -475,6 +475,14 @@ constexpr char TEXT_CRASH_DIVZERO[] = "42 / 0";
 constexpr char TEXT_SELECTBUILDSERVERMENU[] = "Select Buildserver";
 constexpr char TEXT_NOBUILDSERVERCONFIGURED[] = "Not configured";
 
+//Otamenu
+constexpr char TEXT_UPDATENOW[] = "Update now";
+constexpr char TEXT_SELECTBUILD[] = "Select build";
+constexpr char TEXT_OTA_NOBUILDSERVERAVAILABLE[] = "E:No server saved.";
+constexpr char TEXT_OTA_NOBUILDSERVERSELECTED[] = "E:No server selected.";
+constexpr char TEXT_OTA_NOCONNECTION[] = "E:No internet.";
+constexpr char TEXT_OTA_WAITFORRESPONSE[] = "Wait for response...";
+
 #ifdef FEATURE_CAN
 constexpr char TEXT_POWERSUPPLY[] = "Powersupply";
 #endif