diff --git a/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf b/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf
index 904aa1b33..6d82a337d 100644
--- a/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf
+++ b/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.conf
@@ -17,11 +17,11 @@ CONFIG_LLEXT_STORAGE_WRITABLE=n
 CONFIG_SHARED_MULTI_HEAP=y
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_LLEXT_HEAP_SIZE=256
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
-CONFIG_LLEXT_HEAP_REGION="SRAM2"
+CONFIG_LLEXT_HEAP_REGION="SRAM1"
 
 CONFIG_LOG_BACKEND_UART=y
 CONFIG_LOG_BACKEND_UART_AUTOSTART=n
diff --git a/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay b/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay
index 8deef0026..013e1a561 100644
--- a/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay
+++ b/variants/arduino_giga_r1_stm32h747xx_m7/arduino_giga_r1_stm32h747xx_m7.overlay
@@ -410,7 +410,7 @@
 		};
 
 		user_sketch: partition@e0000 {
-			reg = <0x0E0000 0x20000>;
+			reg = <0x000E0000 0x00040000>;
 		};
 	};
 };
@@ -605,6 +605,12 @@
 	};
 };
 
+&sram1 {
+	reg = <0x30000000 DT_SIZE_K(256)>;
+};
+
+/delete-node/ &sram2;
+
 /* Include common flash filesystem configuration */
 qspi_flash: &n25q128a1 {};
 #include "../common/arduino_flash_fs.dtsi"
diff --git a/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.conf b/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.conf
index 97cbe058a..55728da6f 100644
--- a/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.conf
+++ b/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.conf
@@ -33,11 +33,11 @@ CONFIG_ARM_MPU=y
 CONFIG_MAX_THREAD_BYTES=4
 
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_LLEXT_HEAP_SIZE=256
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
-CONFIG_LLEXT_HEAP_REGION="SRAM2"
+CONFIG_LLEXT_HEAP_REGION="SRAM1"
 
 CONFIG_ADC=y
 CONFIG_PWM=y
diff --git a/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.overlay b/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.overlay
index 41954a198..2c4add9bd 100644
--- a/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.overlay
+++ b/variants/arduino_nicla_vision_stm32h747xx_m7/arduino_nicla_vision_stm32h747xx_m7.overlay
@@ -232,7 +232,7 @@
                     };
 
                     user_sketch: partition@e0000 {
-                        reg = <0x0E0000 0x20000>;
+                        reg = <0x000E0000 0x00040000>;
                     };
                 };
             };
@@ -290,6 +290,12 @@
     };
 };
 
+&sram1 {
+	reg = <0x30000000 DT_SIZE_K(256)>;
+};
+
+/delete-node/ &sram2;
+
 /* Include common flash filesystem configuration */
 qspi_flash: &n25q128a1 {};
 #include "../common/arduino_flash_fs.dtsi"
diff --git a/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf b/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf
index 5aeef0c6e..88923274a 100644
--- a/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf
+++ b/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.conf
@@ -16,11 +16,11 @@ CONFIG_LLEXT_STORAGE_WRITABLE=n
 
 CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_LLEXT_HEAP_SIZE=256
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
-CONFIG_LLEXT_HEAP_REGION="SRAM2"
+CONFIG_LLEXT_HEAP_REGION="SRAM1"
 
 CONFIG_LOG_BACKEND_UART=y
 CONFIG_LOG_BACKEND_UART_AUTOSTART=n
diff --git a/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.overlay b/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.overlay
index b73d69cc9..3c8118a10 100644
--- a/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.overlay
+++ b/variants/arduino_opta_stm32h747xx_m7/arduino_opta_stm32h747xx_m7.overlay
@@ -74,7 +74,7 @@
 &flash0 {
 	partitions {
 		user_sketch: partition@e0000 {
-			reg = <0x0E0000 0x20000>;
+			reg = <0x000E0000 0x00040000>;
 		};
 	};
 };
@@ -134,5 +134,11 @@
 	};
 };
 
+&sram1 {
+	reg = <0x30000000 DT_SIZE_K(256)>;
+};
+
+/delete-node/ &sram2;
+
 /* Include common flash filesystem configuration */
 #include "../common/arduino_flash_fs.dtsi"
diff --git a/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf b/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf
index 7c11eda25..ac2d93cd2 100644
--- a/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf
+++ b/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.conf
@@ -34,11 +34,11 @@ CONFIG_CAN=y
 CONFIG_CAN_FD_MODE=y
 
 CONFIG_MAIN_STACK_SIZE=32768
-CONFIG_LLEXT_HEAP_SIZE=128
+CONFIG_LLEXT_HEAP_SIZE=256
 
 CONFIG_CODE_DATA_RELOCATION=y
 CONFIG_MAIN_STACK_REGION="DTCM"
-CONFIG_LLEXT_HEAP_REGION="SRAM2"
+CONFIG_LLEXT_HEAP_REGION="SRAM1"
 
 CONFIG_ADC=y
 CONFIG_PWM=y
diff --git a/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.overlay b/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.overlay
index 3e7714420..2d5ca995c 100644
--- a/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.overlay
+++ b/variants/arduino_portenta_h7_stm32h747xx_m7/arduino_portenta_h7_stm32h747xx_m7.overlay
@@ -331,18 +331,18 @@
 					#size-cells = <1>;
 
 					boot_partition: partition@0 {
-							label = "mcuboot";
-							reg = <0x00000000 0x00040000>;
-							read-only;
+						label = "mcuboot";
+						reg = <0x00000000 0x00040000>;
+						read-only;
 					};
 
 					slot0_partition: partition@40000 {
-							label = "image-0";
-							reg = <0x00040000 0x000A0000>;
+						label = "image-0";
+						reg = <0x00040000 0x000A0000>;
 					};
 
 					user_sketch: partition@e0000 {
-						reg = <0x0E0000 0x20000>;
+						reg = <0x000E0000 0x00040000>;
 					};
 				};
 			};
@@ -442,3 +442,9 @@ qspi_flash: &mx25l12833f {};
 			      <&adc1 13>; /* Hack for D20 */
 	};
 };
+
+&sram1 {
+	reg = <0x30000000 DT_SIZE_K(256)>;
+};
+
+/delete-node/ &sram2;