diff --git a/.gitignore b/.gitignore
index 9783354..8d57e6e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,45 +2,28 @@
 # This .gitignore file was automatically created by Microsoft(R) Visual Studio.
 ################################################################################
 
-/Back/skydiveLogs-api/obj
-/Back/.vs/skydiveLogs-api/v15
-/Back/skydiveLogs-api/bin
-/Back/.vs
-/Back/skydiveLogs-api.DomainBusiness/obj
-/Back/skydiveLogs-api.Infrastructure/obj
-/Back/skydiveLogs-api.Model/obj
-/Back/skydiveLogs-api.Model/bin
-/Back/skydiveLogs-api.Ioc/bin
-/Back/skydiveLogs-api.Ioc/obj
-/Back/skydiveLogs-api.Infrastructure/bin
-/Back/skydiveLogs-api.DomainBusiness/bin
-/Back/dist
+/Back/.vs/
+/Back/skydiveLogs-api/obj/
+/Back/skydiveLogs-api/bin/
+/Back/skydiveLogs-api.Model/obj/
+/Back/skydiveLogs-api.Model/bin/
+/Back/skydiveLogs-api.Ioc/bin/
+/Back/skydiveLogs-api.Ioc/obj/
+/Back/skydiveLogs-api.Infrastructure/bin/
+/Back/skydiveLogs-api.Infrastructure/obj/
+/Back/dist/
 /Back/skydiveLogs-api.v3.ncrunchsolution.user
-/Back/skydiveLogs-api/Init/twinOtter.jpg
-/Back/skydiveLogs-api/Init/skyvan.jpg
-/Back/skydiveLogs-api/Init/Pilatus.png
-/Back/skydiveLogs-api/Init/pac.jpg
-/Back/skydiveLogs-api/Init/dornier.jpg
-/Back/skydiveLogs-api/Init/casa.jpg
-/Back/skydiveLogs-api/Init/caravan.jpg
-/Back/skydiveLogs-api/Init/206.jpg
-/Back/skydiveLogs-api/Data
-/Back/skydiveLogs-api.DomainService/bin
-/Back/skydiveLogs-api.DomainService/obj
-/Back/skydiveLogs-api.Data/obj
-/Back/skydiveLogs-api.Business/obj
-/Back/skydiveLogs-api.Domain/obj
-/Back/skydiveLogs-api.Domain/bin/Debug/net5.0
-/Back/skydiveLogs-api.Data/bin/Debug/net5.0
-/Back/skydiveLogs-api.Domain/bin/Release/net5.0/ref/skydiveLogs-api.Domain.dll
-/Back/skydiveLogs-api.Domain/bin/Release/net5.0/skydiveLogs-api.Domain.dll
-/Back/skydiveLogs-api.Domain/bin/Release/net5.0/skydiveLogs-api.Domain.pdb
-/Back/skydiveLogs-api/Data/JumpsDb-log.db
-/Back/skydiveLogs-api/Data/JumpsDb.db
-Back/skydiveLogs-api/Data/JumpsDb.db
-Back/skydiveLogs-api/Data/JumpsDb-log.db
-/Back/skydiveLogs-api.Domain/bin/Release/net5.0/skydiveLogs-api.Domain.deps.json
-/Back/skydiveLogs-api.Domain/bin/Debug/net6.0
-/Back/skydiveLogs-api.Domain/bin/Debug/net7.0
-Back/skydiveLogs-api/Data/JumpsDb.db
-/Back/skydiveLogs-api/Data/JumpsDb.db
+/Back/skydiveLogs-api/Init/*.jpg
+/Back/skydiveLogs-api/Update/
+/Back/skydiveLogs-api.DomainService/bin/
+/Back/skydiveLogs-api.DomainService/obj/
+/Back/skydiveLogs-api.Business/bin/
+/Back/skydiveLogs-api.Business/obj/
+/Back/skydiveLogs-api.Data/bin/
+/Back/skydiveLogs-api.Data/obj/
+/Back/skydiveLogs-api.Domain/bin/
+/Back/skydiveLogs-api.Domain/obj/
+/Back/skydiveLogs-api/Data/
+/Back/skydiveLogs-api/users.txt
+/Back/skydiveLogs-api.DomainBusiness/bin/
+/Back/skydiveLogs-api.DomainBusiness/obj/
diff --git a/Back/skydiveLogs-api.DomainBusiness/AircraftService.cs b/Back/skydiveLogs-api.DomainBusiness/AircraftService.cs
index 9815fd9..c26b042 100644
--- a/Back/skydiveLogs-api.DomainBusiness/AircraftService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/AircraftService.cs
@@ -49,9 +49,15 @@ namespace skydiveLogs_api.DomainBusiness
             return _cacheService.Get<IEnumerable<Aircraft>>(CacheType.Aircraft);
         }
 
-        public void UpdateAircraft(int id, Aircraft aircraft)
+        public bool UpdateAircraft(int id, Aircraft aircraft, bool resetCache = true)
         {
-            throw new NotImplementedException();
+            aircraft.Id = id;
+
+            var result = _aircraftRepository.Update(aircraft);
+            if (resetCache && result)
+                _cacheService.Delete(CacheType.JumpType);
+
+            return result;
         }
 
         #endregion Public Methods
diff --git a/Back/skydiveLogs-api.DomainBusiness/DropZoneService.cs b/Back/skydiveLogs-api.DomainBusiness/DropZoneService.cs
index 53dccaa..c598ca3 100644
--- a/Back/skydiveLogs-api.DomainBusiness/DropZoneService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/DropZoneService.cs
@@ -92,12 +92,12 @@ namespace skydiveLogs_api.DomainBusiness
             return result > 0;
         }
 
-        public bool UpdateDz(int id, DropZone dropZone)
+        public bool UpdateDz(int id, DropZone dropZone, bool resetCache = true)
         {
             dropZone.Id = id;
 
             var result = _dropZoneRepository.Update(dropZone);
-            if (result)
+            if (resetCache && result)
                 _cacheService.Delete(CacheType.DropZone);
 
             return result;
diff --git a/Back/skydiveLogs-api.DomainBusiness/InitDbService.cs b/Back/skydiveLogs-api.DomainBusiness/InitDbService.cs
index e5a4437..541d8bc 100644
--- a/Back/skydiveLogs-api.DomainBusiness/InitDbService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/InitDbService.cs
@@ -13,18 +13,31 @@ namespace skydiveLogs_api.DomainBusiness
         public InitDbService(IAircraftService aircraftService,
                              IJumpTypeService jumpTypeService,
                              IDropZoneService dropZoneService,
-                             IUserService userService)
+                             IUserService userService,
+                             ICacheService cacheService)
         {
             _aircraftService = aircraftService;
             _jumpTypeService = jumpTypeService;
             _dropZoneService = dropZoneService;
             _userService = userService;
+            _cacheService = cacheService;
         }
 
         #endregion Public Constructors
 
         #region Public Methods
 
+        public void Update()
+        {
+            UpdateAircrafts();
+            UpdateDropZones();
+            UpdateJumpTypes();
+
+            _cacheService.Delete(CacheType.Aircraft);
+            _cacheService.Delete(CacheType.DropZone);
+            _cacheService.Delete(CacheType.JumpType);
+        }
+
         public void GenerateDb()
         {
             LoadAircrafts();
@@ -50,6 +63,7 @@ namespace skydiveLogs_api.DomainBusiness
             _userService.AddNewUser(adminUser, true);
         }
 
+        #region Init tables and informations
         private void LoadAircrafts()
         {
             var jsonString = File.ReadAllText("Init/aircraft.json");
@@ -97,16 +111,85 @@ namespace skydiveLogs_api.DomainBusiness
                 _jumpTypeService.AddNewJumpType(item);
             }
         }
+        #endregion
+
+        #region Update the existing data
+        private void UpdateAircrafts()
+        {
+            var file = "Update/aircraft.json";
+            if (File.Exists(file))
+            {
+                var jsonString = File.ReadAllText(file);
+                var options = new JsonSerializerOptions
+                {
+                    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+                    WriteIndented = true
+                };
+                var jsonModel = JsonSerializer.Deserialize<List<Aircraft>>(jsonString, options);
+
+                foreach (var item in jsonModel)
+                {
+                    _aircraftService.UpdateAircraft(item.Id, item, false);
+                }
+
+                File.Delete(file);
+            }
+        }
+
+        private void UpdateDropZones()
+        {
+            var file = "Update/dropZone.json";
+            if (File.Exists(file))
+            {
+                var jsonString = File.ReadAllText("Update/dropZone.json");
+                var options = new JsonSerializerOptions
+                {
+                    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+                    WriteIndented = true
+                };
+                var jsonModel = JsonSerializer.Deserialize<List<DropZone>>(jsonString, options);
+
+                foreach (var item in jsonModel)
+                {
+                    _dropZoneService.UpdateDz(item.Id, item, false);
+                }
+
+                File.Delete(file);
+            }
+        }
+
+        private void UpdateJumpTypes()
+        {
+            var file = "Update/jumpType.json";
+            if (File.Exists(file))
+            {
+                var jsonString = File.ReadAllText("Update/jumpType.json");
+                var options = new JsonSerializerOptions
+                {
+                    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+                    WriteIndented = true
+                };
+                var jsonModel = JsonSerializer.Deserialize<List<JumpType>>(jsonString, options);
+
+                foreach (var item in jsonModel)
+                {
+                    _jumpTypeService.UpdateJumpType(item.Id, item, false);
+                }
+
+                File.Delete(file);
+            }
+        }
+        #endregion
 
         #endregion Private Methods
 
         #region Private Fields
 
         private readonly IAircraftService _aircraftService;
-
         private readonly IDropZoneService _dropZoneService;
         private readonly IJumpTypeService _jumpTypeService;
         private readonly IUserService _userService;
+        private readonly ICacheService _cacheService;
 
         #endregion Private Fields
     }
diff --git a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IAircraftService.cs b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IAircraftService.cs
index 210f583..2441291 100644
--- a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IAircraftService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IAircraftService.cs
@@ -15,7 +15,7 @@ namespace skydiveLogs_api.DomainBusiness.Interfaces
 
         IEnumerable<Aircraft> GetAllAircrafts();
 
-        void UpdateAircraft(int id, Aircraft aircraft);
+        bool UpdateAircraft(int id, Aircraft aircraft, bool resetCache = true);
 
         #endregion Public Methods
     }
diff --git a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IDropZoneService.cs b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IDropZoneService.cs
index 3acc3ac..ce68a82 100644
--- a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IDropZoneService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IDropZoneService.cs
@@ -19,7 +19,7 @@ namespace skydiveLogs_api.DomainBusiness.Interfaces
 
         bool RemoveToFavorite(int dzId);
 
-        bool UpdateDz(int id, DropZone dropZone);
+        bool UpdateDz(int id, DropZone dropZone, bool resetCache = true);
 
         #endregion Public Methods
     }
diff --git a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IInitDbService.cs b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IInitDbService.cs
index 04bba8f..ec071d8 100644
--- a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IInitDbService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IInitDbService.cs
@@ -5,6 +5,7 @@
         #region Public Methods
 
         public void GenerateDb();
+        public void Update();
 
         #endregion Public Methods
     }
diff --git a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IJumpTypeService.cs b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IJumpTypeService.cs
index 2a3564d..bdd27b0 100644
--- a/Back/skydiveLogs-api.DomainBusiness/Interfaces/IJumpTypeService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/Interfaces/IJumpTypeService.cs
@@ -17,7 +17,7 @@ namespace skydiveLogs_api.DomainBusiness.Interfaces
 
         JumpType GetJumpTypeById(int id);
 
-        bool UpdateJumpType(int id, JumpType value);
+        bool UpdateJumpType(int id, JumpType value, bool resetCache = true);
 
         #endregion Public Methods
     }
diff --git a/Back/skydiveLogs-api.DomainBusiness/JumpTypeService.cs b/Back/skydiveLogs-api.DomainBusiness/JumpTypeService.cs
index 94164de..ca4329c 100644
--- a/Back/skydiveLogs-api.DomainBusiness/JumpTypeService.cs
+++ b/Back/skydiveLogs-api.DomainBusiness/JumpTypeService.cs
@@ -1,7 +1,6 @@
 using skydiveLogs_api.Domain;
 using skydiveLogs_api.DomainBusiness.Interfaces;
 using skydiveLogs_api.DomainService.Repositories;
-using skydiveLogs_api.Infrastructure;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -55,12 +54,12 @@ namespace skydiveLogs_api.DomainBusiness
             return allJumpTypes.Single(g => g.Id == id);
         }
 
-        public bool UpdateJumpType(int id, JumpType jumpType)
+        public bool UpdateJumpType(int id, JumpType jumpType, bool resetCache = true)
         {
             jumpType.Id = id;
 
             var result = _jumpTypeRepository.Update(jumpType);
-            if (result)
+            if (resetCache && result)
                 _cacheService.Delete(CacheType.JumpType);
 
             return result;
diff --git a/Back/skydiveLogs-api.Ioc/IocService.cs b/Back/skydiveLogs-api.Ioc/IocService.cs
index 56a8920..a08586b 100644
--- a/Back/skydiveLogs-api.Ioc/IocService.cs
+++ b/Back/skydiveLogs-api.Ioc/IocService.cs
@@ -42,7 +42,7 @@ namespace skydiveLogs_api.Ioc
             _services.AddSingleton<ICacheService, CacheService>();
             _services.AddScoped<IIdentityService, IdentityService>();
 
-            _services.AddScoped<ClaimsPrincipal>(s => s.GetService<IHttpContextAccessor>()?.HttpContext.User);
+            _services.AddScoped<ClaimsPrincipal>(s => s.GetService<IHttpContextAccessor>()?.HttpContext?.User);
 
             _services.AddScoped<IAircraftRepository, AircraftRepository>();
             _services.AddScoped<IDropZoneRepository, DropZoneRepository>();
diff --git a/Back/skydiveLogs-api/Startup.cs b/Back/skydiveLogs-api/Startup.cs
index 21f95bb..05a98a4 100644
--- a/Back/skydiveLogs-api/Startup.cs
+++ b/Back/skydiveLogs-api/Startup.cs
@@ -9,6 +9,7 @@ using skydiveLogs_api.DomainBusiness.Interfaces;
 using skydiveLogs_api.Ioc;
 using skydiveLogs_api.Settings;
 using System.IO;
+using System.Linq;
 using System.Text;
 
 namespace skydiveLogs_api
@@ -106,14 +107,21 @@ namespace skydiveLogs_api
         private void CheckAndInitDb(IServiceCollection services)
         {
             string connectionString = Configuration.GetConnectionString("DefaultConnection");
-            string dbFile = connectionString.Replace("Filename=", string.Empty);
+            var dictionary = connectionString.Split(';')
+                                             .Select(part => part.Split('='))
+                                             .Where(part => part.Length == 2)
+                                             .ToDictionary(sp => sp[0], sp => sp[1]);
+
+            string dbFile = dictionary["Filename"]; //connectionString.Replace("Filename=", string.Empty);
+
+
+            var serviceProvider = services.BuildServiceProvider();
+            var initDbService = serviceProvider.GetRequiredService<IInitDbService>();
 
             if (!File.Exists(dbFile))
-            {
-                var serviceProvider = services.BuildServiceProvider();
-                var initDbService = serviceProvider.GetRequiredService<IInitDbService>();
                 initDbService.GenerateDb();
-            }
+            else
+                initDbService.Update();
         }
 
         #endregion Private Methods
diff --git a/Back/skydiveLogs-api/appsettings.Development.json b/Back/skydiveLogs-api/appsettings.Development.json
index 97fbce5..363a09a 100644
--- a/Back/skydiveLogs-api/appsettings.Development.json
+++ b/Back/skydiveLogs-api/appsettings.Development.json
@@ -15,6 +15,6 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "DefaultConnection": "Filename=./Data/JumpsDb.db"
+    "DefaultConnection": "Filename=./Data/JumpsDb.db;connection=shared"
   }
 }
\ No newline at end of file
diff --git a/Back/skydiveLogs-api/appsettings.Release.json b/Back/skydiveLogs-api/appsettings.Release.json
index 389a653..b8f33a4 100644
--- a/Back/skydiveLogs-api/appsettings.Release.json
+++ b/Back/skydiveLogs-api/appsettings.Release.json
@@ -13,6 +13,6 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "DefaultConnection": "Filename=./Data/JumpsDb.db"
+    "DefaultConnection": "Filename=./Data/JumpsDb.db;connection=shared"
   }
 }
\ No newline at end of file
diff --git a/Back/skydiveLogs-api/appsettings.json b/Back/skydiveLogs-api/appsettings.json
index cda2c31..6e88ea9 100644
--- a/Back/skydiveLogs-api/appsettings.json
+++ b/Back/skydiveLogs-api/appsettings.json
@@ -15,6 +15,6 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "DefaultConnection": "Filename=./Data/JumpsDb.db"
+    "DefaultConnection": "Filename=./Data/JumpsDb.db;connection=shared"
   }
 }
diff --git a/Back/skydiveLogs-api/skydiveLogs-api.csproj b/Back/skydiveLogs-api/skydiveLogs-api.csproj
index fc044a2..d3a79fd 100644
--- a/Back/skydiveLogs-api/skydiveLogs-api.csproj
+++ b/Back/skydiveLogs-api/skydiveLogs-api.csproj
@@ -31,4 +31,12 @@
 		<ProjectReference Include="..\skydiveLogs-api.Domain\skydiveLogs-api.Domain.csproj" />
 	</ItemGroup>
 
+	<ItemGroup>
+	  <Content Update="Update\jumpType.json">
+	    <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+	    <ExcludeFromSingleFile>true</ExcludeFromSingleFile>
+	    <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+	  </Content>
+	</ItemGroup>
+
 </Project>