diff --git a/components/bootloader_support/src/bootloader_console.c b/components/bootloader_support/src/bootloader_console.c
index 291dee0afba..fb56ca94da0 100644
--- a/components/bootloader_support/src/bootloader_console.c
+++ b/components/bootloader_support/src/bootloader_console.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2020-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2020-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -63,8 +63,9 @@ void bootloader_console_init(void)
     const int uart_tx_gpio = (CONFIG_ESP_CONSOLE_UART_TX_GPIO >= 0) ? CONFIG_ESP_CONSOLE_UART_TX_GPIO : U0TXD_GPIO_NUM;
     const int uart_rx_gpio = (CONFIG_ESP_CONSOLE_UART_RX_GPIO >= 0) ? CONFIG_ESP_CONSOLE_UART_RX_GPIO : U0RXD_GPIO_NUM;
 
-    // Switch to the new UART (this just changes UART number used for esp_rom_printf in ROM code).
-    esp_rom_output_set_as_console(uart_num);
+    // Switch to the new UART
+    esp_rom_output_set_as_console(uart_num); // changes UART number used for esp_rom_printf in ROM code
+    esp_rom_output_switch_buffer(uart_num);
 
     // If console is attached to UART1 or if non-default pins are used,
     // need to reconfigure pins using GPIO matrix
diff --git a/components/esp_stdio/test_apps/stdio/sdkconfig.ci.custom_uart b/components/esp_stdio/test_apps/stdio/sdkconfig.ci.custom_uart
index 80ed1761ac2..56ee759e76b 100644
--- a/components/esp_stdio/test_apps/stdio/sdkconfig.ci.custom_uart
+++ b/components/esp_stdio/test_apps/stdio/sdkconfig.ci.custom_uart
@@ -1 +1,2 @@
 CONFIG_ESP_CONSOLE_UART_CUSTOM=y
+CONFIG_ESP_CONSOLE_UART_CUSTOM_NUM_1=y
diff --git a/components/esp_system/port/cpu_start.c b/components/esp_system/port/cpu_start.c
index c67af37d0df..f702507d539 100644
--- a/components/esp_system/port/cpu_start.c
+++ b/components/esp_system/port/cpu_start.c
@@ -265,6 +265,9 @@ void ESP_SYSTEM_IRAM_ATTR call_start_cpu1(void)
 #elif !CONFIG_ESP_CONSOLE_USB_CDC
     esp_rom_install_uart_printf();
     esp_rom_output_set_as_console(CONFIG_ESP_CONSOLE_ROM_SERIAL_PORT_NUM);
+#if CONFIG_ESP_CONSOLE_UART_CUSTOM
+    esp_rom_output_switch_buffer(CONFIG_ESP_CONSOLE_UART_NUM);
+#endif
 #endif
 
     cpu_utility_ll_enable_debug(1);