diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 9033e4d331..02b97c5317 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -690,7 +690,7 @@
 #elif ANY(MachineEnder3V2, MachineEnder3S1) && ANY(FORCEV2DISPLAY, SKRE3Turbo)
   #define LCD_SERIAL_PORT 1
   #define LCD_BAUDRATE 115200
-  #define SERIAL_CATCHALL -1
+  //#define SERIAL_CATCHALL -1
 #elif ANY(MachineCR10SPro, MachineCRX, MachineEnder5Plus, MachineCR10Max, MachineCR5) && NONE(GraphicLCD, OrigLCD, MachineEnder3V2, MachineEnder3S1, Creality422, Creality427, MachineEnder6, FORCEV2DISPLAY)
   #define LCD_SERIAL_PORT 2
   #define LCD_BAUDRATE 115200
@@ -698,7 +698,7 @@
 #elif ANY(MachineCR10SPro, MachineCRX, MachineEnder5Plus, MachineCR5, MachineCR10Max, MachineEnder6, Creality422, Creality427, MachineSermoonD1, MachineEnder3Touchscreen, MachineCR6, MachineCR6Max, FORCEV2DISPLAY) && NONE(GraphicLCD, OrigLCD)
   #define LCD_SERIAL_PORT 3
   #define LCD_BAUDRATE 115200
-  #define SERIAL_CATCHALL 1
+  //#define SERIAL_CATCHALL 1
 #elif ENABLED(MachineCR10Smart)
   #define LCD_SERIAL_PORT 3
   #define LCD_BAUDRATE 115200
@@ -4064,9 +4064,9 @@
 // If you have a speaker that can produce tones, enable it here.
 // By default Marlin assumes you have a buzzer with a fixed frequency.
 //
-#if ANY(MachineCR6, MachineCR6Max, MachineEnder3Touchscreen)
+//#if ANY(MachineCR6, MachineCR6Max, MachineEnder3Touchscreen)
   #define SPEAKER
-#endif
+//#endif
 
 //
 // The duration and frequency for the UI feedback sound.
@@ -4750,9 +4750,9 @@
 // Use software PWM to drive the fan, as for the heaters. This uses a very low frequency
 // which is not as annoying as with the hardware PWM. On the other hand, if this frequency
 // is too low, you should also increment SOFT_PWM_SCALE.
-#if ANY(SKRPRO11, SKRMiniE3V2, MachineEnder6, MachineEnder7, Creality427, Creality422, SKR_CR6, CR6_452, MachineCR30, MachineCR6, MachineCR6Max, MachineCR10Smart, MachineCR10SmartPro, MachineEnder3S1, MachineEnder2Pro)
+//#if ANY(SKRPRO11, SKRMiniE3V2, MachineEnder6, MachineEnder7, Creality427, Creality422, SKR_CR6, CR6_452, MachineCR30, MachineCR6, MachineCR6Max, MachineCR10Smart, MachineCR10SmartPro, MachineEnder3S1, MachineEnder2Pro)
   #define FAN_SOFT_PWM
-#endif
+//#endif
 // Incrementing this by 1 will double the software PWM frequency,
 // affecting heaters, and the fan if FAN_SOFT_PWM is enabled.
 // However, control resolution will be halved for each increment;
diff --git a/platformio.ini b/platformio.ini
index 50130685fc..0897ece00f 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,12 +18,8 @@ default_envs =
 	10SPro_BLT_BIL
 	CRX_BLT_UBL_NoFil
 	CRX_BLT_BIL_NoFil
-	E5PUBLSlntDZ
-	E5PBILSlntDZ
 	E5P_UBL_DZ
 	E5P_BIL_DZ
-	E5P_UBL_Slnt
-	E5P_BIL_Slnt
 	E5P_UBL
 	E5P_BIL
 	CR10Max_UBL
@@ -36,14 +32,10 @@ default_envs =
 	10SProV2_BIL
 	CRX_NoFil
 	CRX_Fil
-	E5PBILSlntDZH
 	E5P_BIL_DZH
-	E5P_UBL_SlntH
-	E5P_BIL_SlntH
 	E5P_UBLH
 	E5P_BILH
 	E5P_UBL_DZH
-	E5PUBLSlntDZH
 	10SPro_BLT_UBL_Enc
 	S5_AC
 	S5_BLT
@@ -97,12 +89,8 @@ default_envs =
 	CR10Max_UBL_MC
 	E5P_BIL_MC
 	E5P_UBL_MC
-	E5P_BIL_Slnt_MC
-	E5P_UBL_Slnt_MC
 	E5P_BIL_DZ_MC
 	E5P_UBL_DZ_MC
-	E5PBILSlntDZ_MC
-	E5PUBLSlntDZ_MC
 	CRX_BLT_BILNoFilMC
 	CRX_BLT_UBLNoFilMC
 	CRX_BLT_BIL_Fil_MC
@@ -170,12 +158,8 @@ default_envs =
 	CR10Max_UBL_ME
 	E5P_BIL_ME
 	E5P_UBL_ME
-	E5P_BIL_Slnt_ME
-	E5P_UBL_Slnt_ME
 	E5P_BIL_DZ_ME
 	E5P_UBL_DZ_ME
-	E5PBILSlntDZ_ME
-	E5PUBLSlntDZ_ME
 	CRX_BLTBILNoFilME
 	CRX_BLTUBLNoFilME
 	CRX_BLT_BIL_Fil_ME
@@ -394,6 +378,8 @@ default_envs =
   SermoonD1_BLT
   SermoonD1_BLT_ZM
   CR10Smart
+  CR10Smart_64kBL
+  CR10SmartPro
   Ender2Pro
   Ender2Pro_BLT
   CR5Pro
@@ -3808,6 +3794,24 @@ build_flags                 = ${stm32_variant.build_flags}
                               -DSS_TIMER=4 -DTIMER_SERVO=TIM5
                               -DENABLE_HWSERIAL3 -DTRANSFER_CLOCK_DIV=8      -DMachineCR10Smart
 
+[env:CR10Smart_64kBL]
+extends                     = stm32_variant
+board_build.variant         = MARLIN_F103Rx
+board_build.offset          = 0x10000
+board_upload.offset_address = 0x08010000
+build_unflags               = ${stm32_variant.build_unflags}
+                              -DUSBCON -DUSBD_USE_CDC
+extra_scripts               = ${stm32_variant.extra_scripts}
+                              pre:buildroot/share/PlatformIO/scripts/random-bin.py
+monitor_speed               = 115200
+debug_tool                  = jlink
+upload_protocol             = jlink
+board   = genericSTM32F103RC
+build_flags                 = ${stm32_variant.build_flags}
+                              -DMCU_STM32F103RE -DHAL_SD_MODULE_ENABLED
+                              -DSS_TIMER=4 -DTIMER_SERVO=TIM5
+                              -DENABLE_HWSERIAL3 -DTRANSFER_CLOCK_DIV=8      -DMachineCR10Smart
+
 [env:CR10SmartPro]
 extends                     = stm32_variant
 board_build.variant         = MARLIN_F103Rx