diff --git a/rsconcept/backend/apps/users/serializers.py b/rsconcept/backend/apps/users/serializers.py
index f074aa66..4dc1f13d 100644
--- a/rsconcept/backend/apps/users/serializers.py
+++ b/rsconcept/backend/apps/users/serializers.py
@@ -103,6 +103,7 @@ class UserSerializer(serializers.ModelSerializer):
             'first_name',
             'last_name',
         ]
+        read_only_fields = ('id', 'username')
 
     def validate(self, attrs):
         attrs = super().validate(attrs)
diff --git a/rsconcept/backend/apps/users/tests/t_views.py b/rsconcept/backend/apps/users/tests/t_views.py
index d73c232d..8999bb28 100644
--- a/rsconcept/backend/apps/users/tests/t_views.py
+++ b/rsconcept/backend/apps/users/tests/t_views.py
@@ -101,6 +101,10 @@ class TestUserUserProfileAPIView(EndpointTester):
         data = {'email': self.user2.email}
         self.executeBadData(data=data)
 
+        data = {'username': 'new_username'}
+        response = self.executeOK(data=data)
+        self.assertNotEqual(response.data['username'], data['username'])
+
         self.logout()
         self.executeForbidden()
 
diff --git a/rsconcept/frontend/src/backend/users/api.ts b/rsconcept/frontend/src/backend/users/api.ts
index 968c0507..83604031 100644
--- a/rsconcept/frontend/src/backend/users/api.ts
+++ b/rsconcept/frontend/src/backend/users/api.ts
@@ -30,12 +30,16 @@ export type IUserSignupDTO = z.infer<typeof UserSignupSchema>;
 /**
  * Represents user data, intended to update user profile in persistent storage.
  */
-export interface IUpdateProfileDTO {
-  username: string;
-  email: string;
-  first_name: string;
-  last_name: string;
-}
+export const UpdateProfileSchema = z.object({
+  email: z.string().email(errors.emailField),
+  first_name: z.string(),
+  last_name: z.string()
+});
+
+/**
+ * Represents user data, intended to update user profile in persistent storage.
+ */
+export type IUpdateProfileDTO = z.infer<typeof UpdateProfileSchema>;
 
 export const usersApi = {
   baseKey: 'users',
diff --git a/rsconcept/frontend/src/backend/users/useUpdateProfile.tsx b/rsconcept/frontend/src/backend/users/useUpdateProfile.tsx
index 654c4fe7..ae28a59d 100644
--- a/rsconcept/frontend/src/backend/users/useUpdateProfile.tsx
+++ b/rsconcept/frontend/src/backend/users/useUpdateProfile.tsx
@@ -1,5 +1,8 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
+import { IUserProfile } from '@/models/user';
+
+import { DataCallback } from '../apiTransport';
 import { IUpdateProfileDTO, usersApi } from './api';
 
 export const useUpdateProfile = () => {
@@ -13,7 +16,8 @@ export const useUpdateProfile = () => {
     }
   });
   return {
-    updateProfile: (data: IUpdateProfileDTO) => mutation.mutate(data),
+    updateProfile: (data: IUpdateProfileDTO, onSuccess?: DataCallback<IUserProfile>) =>
+      mutation.mutate(data, { onSuccess }),
     isPending: mutation.isPending,
     error: mutation.error,
     reset: mutation.reset
diff --git a/rsconcept/frontend/src/pages/LoginPage.tsx b/rsconcept/frontend/src/pages/LoginPage.tsx
index 4ed1112b..666281e4 100644
--- a/rsconcept/frontend/src/pages/LoginPage.tsx
+++ b/rsconcept/frontend/src/pages/LoginPage.tsx
@@ -35,7 +35,7 @@ function LoginPage() {
   });
 
   const { isAnonymous } = useAuthSuspense();
-  const { login, isPending, error: serverError, reset } = useLogin();
+  const { login, isPending, error: serverError, reset: clearServerError } = useLogin();
 
   function onSubmit(data: IUserLoginDTO) {
     login(data, () => {
@@ -49,7 +49,7 @@ function LoginPage() {
   }
 
   function resetErrors() {
-    reset();
+    clearServerError();
     clearErrors();
   }
 
diff --git a/rsconcept/frontend/src/pages/RegisterPage/FormSignup.tsx b/rsconcept/frontend/src/pages/RegisterPage/FormSignup.tsx
index 26effbb8..24224c47 100644
--- a/rsconcept/frontend/src/pages/RegisterPage/FormSignup.tsx
+++ b/rsconcept/frontend/src/pages/RegisterPage/FormSignup.tsx
@@ -6,7 +6,7 @@ import clsx from 'clsx';
 import { useState } from 'react';
 import { useForm } from 'react-hook-form';
 
-import { useConceptNavigation } from '@/app/Navigation/NavigationContext';
+import { useBlockNavigation, useConceptNavigation } from '@/app/Navigation/NavigationContext';
 import { urls } from '@/app/urls';
 import { IUserSignupDTO, UserSignupSchema } from '@/backend/users/api';
 import { useSignup } from '@/backend/users/useSignup';
@@ -26,7 +26,7 @@ import { globals, patterns } from '@/utils/constants';
 
 function FormSignup() {
   const router = useConceptNavigation();
-  const { signup, isPending, error: serverError, reset } = useSignup();
+  const { signup, isPending, error: serverError, reset: clearServerError } = useSignup();
   const [acceptPrivacy, setAcceptPrivacy] = useState(false);
   const [acceptRules, setAcceptRules] = useState(false);
 
@@ -34,13 +34,15 @@ function FormSignup() {
     register,
     handleSubmit,
     clearErrors,
-    formState: { errors }
+    formState: { errors, isDirty }
   } = useForm<IUserSignupDTO>({
     resolver: zodResolver(UserSignupSchema)
   });
 
+  useBlockNavigation(isDirty);
+
   function resetErrors() {
-    reset();
+    clearServerError();
     clearErrors();
   }
 
diff --git a/rsconcept/frontend/src/pages/UserProfilePage/EditorPassword.tsx b/rsconcept/frontend/src/pages/UserProfilePage/EditorPassword.tsx
index b01b3ac6..6692cb5d 100644
--- a/rsconcept/frontend/src/pages/UserProfilePage/EditorPassword.tsx
+++ b/rsconcept/frontend/src/pages/UserProfilePage/EditorPassword.tsx
@@ -16,7 +16,7 @@ import TextInput from '@/components/ui/TextInput';
 
 function EditorPassword() {
   const router = useConceptNavigation();
-  const { changePassword, isPending, error: serverError, reset } = useChangePassword();
+  const { changePassword, isPending, error: serverError, reset: clearServerError } = useChangePassword();
   const {
     register,
     handleSubmit,
@@ -27,7 +27,7 @@ function EditorPassword() {
   });
 
   function resetErrors() {
-    reset();
+    clearServerError();
     clearErrors();
   }
 
diff --git a/rsconcept/frontend/src/pages/UserProfilePage/EditorProfile.tsx b/rsconcept/frontend/src/pages/UserProfilePage/EditorProfile.tsx
index 95a340c4..a6399ce9 100644
--- a/rsconcept/frontend/src/pages/UserProfilePage/EditorProfile.tsx
+++ b/rsconcept/frontend/src/pages/UserProfilePage/EditorProfile.tsx
@@ -1,10 +1,11 @@
 'use client';
 
+import { zodResolver } from '@hookform/resolvers/zod';
 import axios from 'axios';
-import { useEffect, useState } from 'react';
+import { useForm } from 'react-hook-form';
 
 import { useBlockNavigation } from '@/app/Navigation/NavigationContext';
-import { IUpdateProfileDTO } from '@/backend/users/api';
+import { IUpdateProfileDTO, UpdateProfileSchema } from '@/backend/users/api';
 import { useProfileSuspense } from '@/backend/users/useProfile';
 import { useUpdateProfile } from '@/backend/users/useUpdateProfile';
 import { ErrorData } from '@/components/info/InfoError';
@@ -13,76 +14,67 @@ import TextInput from '@/components/ui/TextInput';
 
 function EditorProfile() {
   const { profile } = useProfileSuspense();
-  const { updateProfile, isPending, error } = useUpdateProfile();
+  const { updateProfile, isPending, error: serverError, reset: clearServerError } = useUpdateProfile();
 
-  const [username, setUsername] = useState(profile.username);
-  const [email, setEmail] = useState(profile.email);
-  const [first_name, setFirstName] = useState(profile.first_name);
-  const [last_name, setLastName] = useState(profile.last_name);
+  const {
+    register,
+    handleSubmit,
+    clearErrors,
+    reset: resetForm,
+    formState: { errors, isDirty }
+  } = useForm<IUpdateProfileDTO>({
+    resolver: zodResolver(UpdateProfileSchema),
+    defaultValues: {
+      first_name: profile.first_name,
+      last_name: profile.last_name,
+      email: profile.email
+    }
+  });
 
-  const isModified = profile.email !== email || profile.first_name !== first_name || profile.last_name !== last_name;
+  useBlockNavigation(isDirty);
 
-  useBlockNavigation(isModified);
+  function resetErrors() {
+    clearServerError();
+    clearErrors();
+  }
 
-  useEffect(() => {
-    setUsername(profile.username);
-    setEmail(profile.email);
-    setFirstName(profile.first_name);
-    setLastName(profile.last_name);
-  }, [profile]);
-
-  function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
-    event.preventDefault();
-    const data: IUpdateProfileDTO = {
-      username: username,
-      email: email,
-      first_name: first_name,
-      last_name: last_name
-    };
-    updateProfile(data);
+  function onSubmit(data: IUpdateProfileDTO) {
+    updateProfile(data, () => resetForm({ ...data }));
   }
 
   return (
-    <form onSubmit={handleSubmit} className='cc-column w-[18rem] px-6 py-2'>
-      <TextInput
-        id='username'
-        autoComplete='username'
-        disabled
-        label='Логин'
-        title='Логин изменить нельзя'
-        value={username}
-      />
+    <form
+      className='cc-column w-[18rem] px-6 py-2'
+      onSubmit={event => void handleSubmit(onSubmit)(event)}
+      onChange={resetErrors}
+    >
+      <TextInput id='username' disabled label='Логин' title='Логин изменить нельзя' value={profile.username} />
       <TextInput
         id='first_name'
+        {...register('first_name')}
         autoComplete='off'
         allowEnter
         label='Имя'
-        value={first_name}
-        onChange={event => setFirstName(event.target.value)}
+        error={errors.first_name}
       />
       <TextInput
         id='last_name'
+        {...register('last_name')}
         autoComplete='off'
         allowEnter
         label='Фамилия'
-        value={last_name}
-        onChange={event => setLastName(event.target.value)}
+        error={errors.last_name}
       />
       <TextInput
         id='email'
+        {...register('email')}
         autoComplete='off'
         allowEnter
         label='Электронная почта'
-        value={email}
-        onChange={event => setEmail(event.target.value)}
-      />
-      {error ? <ProcessError error={error} /> : null}
-      <SubmitButton
-        className='self-center mt-6'
-        text='Сохранить данные'
-        loading={isPending}
-        disabled={!isModified || email == ''}
+        error={errors.email}
       />
+      {serverError ? <ServerError error={serverError} /> : null}
+      <SubmitButton className='self-center mt-6' text='Сохранить данные' loading={isPending} />
     </form>
   );
 }
@@ -90,7 +82,7 @@ function EditorProfile() {
 export default EditorProfile;
 
 // ====== Internals =========
-function ProcessError({ error }: { error: ErrorData }): React.ReactElement {
+function ServerError({ error }: { error: ErrorData }): React.ReactElement {
   if (axios.isAxiosError(error) && error.response && error.response.status === 400) {
     if ('email' in error.response.data) {
       return (