diff --git a/boards/_base/beken-72xx.json b/boards/_base/beken-72xx.json
index dd311f0..f466879 100644
--- a/boards/_base/beken-72xx.json
+++ b/boards/_base/beken-72xx.json
@@ -3,8 +3,10 @@
 		"f_cpu": "120000000L",
 		"prefix": "arm-none-eabi-",
 		"bkota": {
-			"encryption": "none",
-			"compression": "gzip"
+			"encryption": "aes256",
+			"compression": "gzip",
+			"key": "0123456789ABCDEF0123456789ABCDEF",
+			"iv": "0123456789ABCDEF"
 		}
 	},
 	"connectivity": [
diff --git a/builder/family/beken-72xx.py b/builder/family/beken-72xx.py
index 99fd8f3..5709352 100644
--- a/builder/family/beken-72xx.py
+++ b/builder/family/beken-72xx.py
@@ -83,6 +83,7 @@ queue.AppendPrivate(
         "-Wno-comment",
         "-Wno-char-subscripts",
         "-Wno-missing-braces",
+        "-Wno-return-type",
     ],
     CFLAGS=[
         "-Wno-format",
diff --git a/builder/family/realtek-ambz.py b/builder/family/realtek-ambz.py
index 4f8ee4d..8d67204 100644
--- a/builder/family/realtek-ambz.py
+++ b/builder/family/realtek-ambz.py
@@ -26,6 +26,7 @@ queue.AppendPublic(
         ("ERRNO", "1"),  # for LwIP
         "MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED",  # enable PSK in mbedTLS
         # "MBEDTLS_DEBUG_C",
+        "MBED_PERIPHERALNAMES_H",  # see fixups/cmsis.h
     ],
     LINKFLAGS=[
         "-mcpu=cortex-m4",
diff --git a/builder/frameworks/base.py b/builder/frameworks/base.py
index 3ad640d..1c82721 100644
--- a/builder/frameworks/base.py
+++ b/builder/frameworks/base.py
@@ -31,6 +31,7 @@ env.Append(
         "-fdata-sections",  # place each function or data item into its own section
         "-ffunction-sections",  # place each function or data item into its own section
         "-fno-strict-aliasing",  # (don't) assume the strictest aliasing rules applicable
+        "-fno-inline-functions",  # (don't) consider all functions for inlining
         # Preprocessor Options
         "-MMD",  # output a rule suitable for make describing the dependencies of the main source file
         # Code Generation Options
@@ -96,6 +97,7 @@ queue.AppendPublic(
     CXXFLAGS=[
         "-Wno-literal-suffix",
         "-Wno-write-strings",
+        "-Wno-psabi",
     ],
     CPPDEFINES=[
         ("LIBRETUYA", 1),
diff --git a/cores/beken-72xx/base/fixups/gcc10.c b/cores/beken-72xx/base/fixups/gcc10.c
new file mode 100644
index 0000000..2b97eac
--- /dev/null
+++ b/cores/beken-72xx/base/fixups/gcc10.c
@@ -0,0 +1,7 @@
+/* Copyright (c) Kuba Szczodrzyński 2023-03-13. */
+
+// Compiling with GCC 10.3.1 requires this or it will produce linker errors.
+// See:
+// - https://github.com/purduesigbots/pros/issues/153#issuecomment-519335375
+// - https://stackoverflow.com/a/64664385
+void __sync_synchronize(void) {}
diff --git a/cores/realtek-ambz/base/fixups/cmsis.h b/cores/realtek-ambz/base/fixups/cmsis.h
new file mode 100644
index 0000000..13c6af5
--- /dev/null
+++ b/cores/realtek-ambz/base/fixups/cmsis.h
@@ -0,0 +1,50 @@
+/* Copyright (c) Kuba Szczodrzyński 2023-03-12. */
+
+// Fix for PeripheralNames.h producing errors on GCC newer than 5.x.x.
+// The struct pointer casts are replaced with register addresses, which fixes compilation.
+// On older versions, this change doesn't make any difference.
+// MBED_PERIPHERALNAMES_H is defined in the SDK builder, to eliminate PeripheralNames.h completely.
+
+#include_next "cmsis.h"
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+	UART_0 = (int)UART0_REG_BASE,
+	UART_1 = (int)UART1_REG_BASE,
+	UART_2 = (int)UART2_REG_BASE,
+} UARTName;
+
+typedef enum {
+	ADC0_0 = 0,
+	ADC0_1,
+	ADC0_2,
+	ADC0_3
+} ADCName;
+
+typedef enum {
+	SPI_0 = (int)SPI0_REG_BASE,
+	SPI_1 = (int)SPI1_REG_BASE,
+} SPIName;
+
+typedef enum {
+	I2C_0 = (int)I2C0_REG_BASE,
+	I2C_1 = (int)I2C1_REG_BASE,
+} I2CName;
+
+typedef enum {
+	PWM_0 = 1,
+	PWM_1,
+	PWM_2,
+	PWM_3,
+	PWM_4,
+	PWM_5
+} PWMName;
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/cores/realtek-ambz/base/fixups/machine/endian.h b/cores/realtek-ambz/base/fixups/machine/endian.h
new file mode 100644
index 0000000..e81cb62
--- /dev/null
+++ b/cores/realtek-ambz/base/fixups/machine/endian.h
@@ -0,0 +1,21 @@
+/* Copyright (c) Kuba Szczodrzyński 2023-03-12. */
+
+#include_next <machine/endian.h>
+
+#pragma once
+
+// GCC versions newer than 5.x.x specify the LITTLE_ENDIAN macro
+// as an alias to _LITTLE_ENDIAN (which in turn holds the actual numeric value).
+// Realtek's rtl8711b_crypto.h redefines _LITTLE_ENDIAN as a macro without
+// any value, which makes comparisons like '#if BYTE_ORDER == LITTLE_ENDIAN' impossible.
+
+#if __GNUC__ > 5
+#undef _LITTLE_ENDIAN
+#undef _BIG_ENDIAN
+#undef LITTLE_ENDIAN
+#undef BIG_ENDIAN
+#undef BYTE_ORDER
+#define LITTLE_ENDIAN 1234
+#define BIG_ENDIAN	  4321
+#define BYTE_ORDER	  LITTLE_ENDIAN
+#endif
diff --git a/platform.json b/platform.json
index 24c79c1..4e06322 100644
--- a/platform.json
+++ b/platform.json
@@ -24,9 +24,7 @@
       "version": "https://github.com/libretuya/framework-realtek-amb1#v2022.06.21",
       "version_prefix": true,
       "toolchains": {
-        "x86_64": "gccarmnoneeabi@~1.50201.0",
-        "arm": "gccarmnoneeabi@~1.50401.211104",
-        "arm64": "gccarmnoneeabi@~1.50401.210715"
+        "any": "gccarmnoneeabi@~1.100301.0"
       },
       "libraries": {
         "lwip": {
@@ -43,9 +41,7 @@
       "version": "https://github.com/libretuya/framework-realtek-ambz2#v2022.11.17",
       "version_prefix": true,
       "toolchains": {
-        "x86_64": "gccarmnoneeabi@~1.100301.0",
-        "arm": "gccarmnoneeabi@~1.100301.0",
-        "arm64": "gccarmnoneeabi@~1.100301.0"
+        "any": "gccarmnoneeabi@~1.100301.0"
       }
     },
     "framework-beken-bdk": {
@@ -54,9 +50,7 @@
       "version": "https://github.com/libretuya/framework-beken-bdk#v2021.06.07",
       "version_prefix": true,
       "toolchains": {
-        "x86_64": "gccarmnoneeabi@~1.40804.0",
-        "arm": "gccarmnoneeabi@~1.40803.0",
-        "arm64": "gccarmnoneeabi@~1.40803.0"
+        "any":"gccarmnoneeabi@~1.100301.0"
       },
       "libraries": {
         "lwip": {
diff --git a/platform.py b/platform.py
index 643d421..7b3ba4f 100644
--- a/platform.py
+++ b/platform.py
@@ -74,6 +74,33 @@ if dirname(__file__) in sys.path:
 ltchiptool.lt_set_path(dirname(__file__))
 
 
+def get_os_specifiers():
+    system = platform.system().lower()
+    arch = platform.machine().lower()
+    if not arch:  # issue #4353
+        arch = "x86"
+        bits = platform.architecture()[0]
+    if "aarch64" in arch:
+        arch = "arm"
+        bits = 64
+    elif "arm" in arch:
+        arch = "arm"
+        bits = 32
+    elif "64" not in arch:
+        arch = "x86"
+        bits = 32
+    else:
+        arch = "x86"
+        bits = 64
+    return [
+        f"{system}_{arch}_{bits}",  # linux_x86_64
+        f"{system}_{bits}",  # linux_64
+        system,  # windows
+        arch,  # arm
+        "any",
+    ]
+
+
 class LibretuyaPlatform(PlatformBase):
     custom_opts: Dict[str, object] = None
     versions: Dict[str, str] = None
@@ -139,13 +166,17 @@ class LibretuyaPlatform(PlatformBase):
         # set specific compiler versions
         if "toolchains" in package_obj:
             toolchains = package_obj["toolchains"]
-            if "arm" in platform.machine():
-                (toolchain, version) = toolchains["arm"].split("@")
-            elif "aarch64" in platform.machine():
-                (toolchain, version) = toolchains["arm64"].split("@")
-            else:
-                (toolchain, version) = toolchains["x86_64"].split("@")
-            version = versions.get("toolchain") or version
+            toolchain_version = None
+            specifiers = get_os_specifiers()
+            for spec in specifiers:
+                toolchain_version = toolchains.get(spec)
+                if toolchain_version:
+                    break
+            if not toolchain_version:
+                raise RuntimeError(
+                    f"Toolchain not found for the current platform: {specifiers}"
+                )
+            (toolchain, version) = toolchain_version.split("@")
             self.packages[f"toolchain-{toolchain}"]["version"] = version
 
         # gather library dependencies