onUpgrade() at newly installed app

I'm a little bit confused about onUpgrade. I'm developing my app and in the proces of developing I did changed the DATABASE_VERSION five times so it is 6 now.

Everything was going smoothly till I totaly uninstalled application from my phone and builded it again. Since then I'm getting errors that none of my tables that I'm asking to are existing...

I think that now, when my DATABASE_VERSIONin project is set to 6 and newly installed app gets it on 6 at start, onUpgrade() is not called.

Question is how to provide all my queries set in onUpgrade method for new instalations?

I know that onUpgrade() is called whatever the getWritableDatabase() is called. But my app crashes on this lane:

Cursor spinner_cursor = db.rawQuery("SELECT value1 AS _id, value2 FROM tab2", null);

Which is preceded by lane:

SQLiteDatabase db = new DBHelper(this).getWritableDatabase();

I am getting this error in logCat:

no such table: car (code 1): , while compiling: SELECT value1 AS _id, value2 FROM tab2

my DBHelper.class looks like

public class DBHelper extends SQLiteOpenHelper {

private static final String DATABASE_NAME = "DataBase1";
private static final int DATABASE_VERSION = 6; 
private static final String CREATE_QUERY =
        "CREATE TABLE tab1 (id, value1, value2, etc)";

private static final String QUERY_2 =
        "CREATE TABLE tab2 (id, value1, value2, etc)";

private static final String QUERY_3 =
        "CREATE TABLE tab3 (id, value1, value2, etc)";

private static final String QUERY_4 =
        "ALTER TABLE tab2 ADD COLUMN value3 VARCHAR(10) NULL";

private static final String QUERY_5 =
        "ALTER TABLE tab2 ADD COLUMN value4 VARCHAR(10) NULL";

private static final String QUERY_6 =
        "ALTER TABLE tab2 ADD COLUMN value5 VARCHAR(10) NULL";

private static final String QUERY_7 =
        "ALTER TABLE tab3 ADD COLUMN value3 VARCHAR(10) NULL"; 

private static final String QUERY_8 =
        "ALTER TABLE tab3 ADD COLUMN value4 VARCHAR(10) NULL";

private static final String QUERY_9 =
        "ALTER TABLE tab3 ADD COLUMN value5 VARCHAR(10) NULL"; 

private static final String QUERY_10 =
        "ALTER TABLE tab3 ADD COLUMN value6 VARCHAR(10) NULL"; 

private static final String QUERY_11 =
        "ALTER TABLE tab3 ADD COLUMN value7 VARCHAR(10) NULL"; 

private static final String QUERY_12 =
        "DROP TABLE tab3";

private static final String QUERY_13 =
        "CREATE TABLE tab3 (id, value1, value2, etc)";


public DBHelper(Context context){

    super(context, DATABASE_NAME, null, DATABASE_VERSION);
    Log.e("DATABASE OPERATIONS", "Database created / opened");
}

@Override
public void onCreate(SQLiteDatabase db) {

    db.execSQL(CREATE_QUERY);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    if (oldVersion < 3) {
        db.execSQL(QUERY_2);
        db.execSQL(QUERY_3);
        db.execSQL(QUERY_4);
        db.execSQL(QUERY_5);
        db.execSQL(QUERY_6);
    }

    if (oldVersion < 4) {
        db.execSQL(QUERY_7);
        db.execSQL(QUERY_8);
        db.execSQL(QUERY_9);
        db.execSQL(QUERY_10);
    }

    if (oldVersion < 5){
        db.execSQL(QUERY_11);
    }

    if (oldVersion < 6){
        db.execSQL(QUERY_12);
        db.execSQL(QUERY_13);
    }

Thanks in advance!

@Override
public void onCreate(SQLiteDatabase db) {

     db.execSQL(CREATE_QUERY);
     db.execSQL(QUERY_2);
     db.execSQL(QUERY_3);
     db.execSQL(QUERY_4);
     db.execSQL(QUERY_5);
     db.execSQL(QUERY_6);
     db.execSQL(QUERY_7);
     db.execSQL(QUERY_8);
     db.execSQL(QUERY_9);
     db.execSQL(QUERY_10);
     db.execSQL(QUERY_11);
     db.execSQL(QUERY_12);
     db.execSQL(QUERY_13);

}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

    if (oldVersion < 3) {
        db.execSQL(QUERY_2);
        db.execSQL(QUERY_3);
        db.execSQL(QUERY_4);
        db.execSQL(QUERY_5);
        db.execSQL(QUERY_6);
    }

    if (oldVersion < 4) {
        db.execSQL(QUERY_7);
        db.execSQL(QUERY_8);
        db.execSQL(QUERY_9);
        db.execSQL(QUERY_10);
    }

    if (oldVersion < 5){
        db.execSQL(QUERY_11);
    }

    if (oldVersion < 6){
        db.execSQL(QUERY_12);
        db.execSQL(QUERY_13);
    }