UART would not work after jumping from bootloader.

At the bootloader, LPC1788 communicates with the bluetooth (HC05) module through UART1.
After jumping to the code in the RAM, the UART1 would not work and nothing will be ready on its interrupts. My jumping code is as follows:

        nand_readPartition(0, byte_wr_ptr, 29996);

        __disable_irq();

        UART_TxCmd(UART_1, DISABLE);

        NVIC_DisableIRQ(UART1_IRQn);

        UART_DeInit(UART_1);

        SysTick_Config(0);

        //NVIC_DeInit();
        //NVIC_SCBDeInit();
        NVIC_SetVTOR(USER_PROGRAM_START);
        boot_jump(USER_PROGRAM_START);

everything is correct, i uses CAN and its interrupts. the interrupts for CAN is works fun. it means the vector interrupts remap correctly.

Best Regards,
Mostafa