diff --git a/radio/src/drivers/frftl.cpp b/radio/src/drivers/frftl.cpp
index a47132820c0..02ef61ec689 100644
--- a/radio/src/drivers/frftl.cpp
+++ b/radio/src/drivers/frftl.cpp
@@ -63,6 +63,10 @@
 
 #define SECTOR_SIZE                    512
 #define PAGE_SIZE                      4096
+#define BLOCK_SIZE                     32768
+#define BLOCK_MASK                     (BLOCK_SIZE - 1)
+#define PAGES_PER_BLOCK                (BLOCK_SIZE / PAGE_SIZE)
+#define USE_BLOCK_ERASE_THRESHOLD      4
 #define SECTORS_PER_PAGE               (PAGE_SIZE / SECTOR_SIZE)
 #define TT_PAGE_MAGIC                  0xEF87364A
 #define TT_RECORDS_PER_PAGE            1024
@@ -541,6 +545,42 @@ static uint16_t allocatePhysicalPage(FrFTL* ftl)
   return physicalPageNo;
 }
 
+static bool quickErase(FrFTL* ftl, uint32_t addr)
+{
+
+  const FrFTLOps* cb = ftl->callbacks;
+  if ((addr & BLOCK_MASK) == 0) {
+    // Block aligned
+
+    uint16_t ppn = addr / PAGE_SIZE;
+    uint8_t count = 0;
+    bool hasUsed = false;
+
+    // Check state of the whole jumbo page
+    for (uint8_t i = 0; i < PAGES_PER_BLOCK; i++) {
+      PhysicalPageState state = getPhysicalPageState(ftl, ppn + i);
+      if (state == UNKNOWN || state == ERASE_REQUIRED) {
+        count++;
+      }
+      if (state == USED) {
+        hasUsed = true;
+        break;  // Cannot use block erase
+      }
+    }
+
+    if (!hasUsed && count >= USE_BLOCK_ERASE_THRESHOLD) {
+      bool ret = cb->flashBlockErase(addr);
+      if (ret) {
+        for (uint8_t i = 0; i < PAGES_PER_BLOCK; i++) {
+          setPhysicalPageState(ftl, ppn + i, ERASED);
+        }
+      }
+      return ret;
+    }
+  }
+  return cb->flashErase(addr);
+}
+
 static bool programPage(FrFTL* ftl, PageBuffer* buffer, bool doErase)
 {
   const FrFTLOps* cb = ftl->callbacks;
@@ -548,7 +588,7 @@ static bool programPage(FrFTL* ftl, PageBuffer* buffer, bool doErase)
         
   if (doErase && getPhysicalPageState(ftl, buffer->physicalPageNo) != ERASED) {
     // Do erase on the fly
-    if (!cb->flashErase(pageAddr)) {
+    if (!quickErase(ftl, pageAddr)) {
       return false;
     }
   }
@@ -991,7 +1031,7 @@ void createFTL(FrFTL* ftl)
   const FrFTLOps* cb = ftl->callbacks;
   do {
     if (getPhysicalPageState(ftl, i) != ERASED) {
-      cb->flashErase(addr);
+      quickErase(ftl, addr);
     }
     cb->flashProgram(addr, (const uint8_t*)&tt, PAGE_SIZE);
     setPhysicalPageState(ftl, i, USED);
@@ -1010,7 +1050,7 @@ void createFTL(FrFTL* ftl)
   } while(++i < ftl->ttPageCount);
 
   if (getPhysicalPageState(ftl, 0) != ERASED) {
-    cb->flashErase(0);
+    quickErase(ftl, 0);
   }
 
   cb->flashProgram(0, (const uint8_t*)&tt, PAGE_SIZE);
diff --git a/radio/src/drivers/frftl.h b/radio/src/drivers/frftl.h
index 28ad44f5b98..d5b867b08c6 100644
--- a/radio/src/drivers/frftl.h
+++ b/radio/src/drivers/frftl.h
@@ -48,6 +48,7 @@ typedef struct {
   bool (*flashRead)(uint32_t addr, uint8_t* buf, uint32_t len);
   bool (*flashProgram)(uint32_t addr, const uint8_t* buf, uint32_t len);
   bool (*flashErase)(uint32_t addr);
+  bool (*flashBlockErase)(uint32_t addr);
   bool (*isFlashErased)(uint32_t addr);
 } FrFTLOps;
 
diff --git a/radio/src/targets/common/arm/stm32/bootloader/boot.cpp b/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
index 49a73381d7f..603bed01104 100644
--- a/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
+++ b/radio/src/targets/common/arm/stm32/bootloader/boot.cpp
@@ -62,7 +62,7 @@
 #endif
 
 #if defined(SPI_FLASH)
-  #include "spi_flash.h"
+  #include "diskio_spi_flash.h"
   #define SEL_CLEAR_FLASH_STORAGE_MENU_LEN 2
 #endif
 
@@ -537,7 +537,9 @@ int  bootloaderMain()
         lcdRefresh();
         if(event != EVT_KEY_BREAK(KEY_ENTER))
           continue;
-        flashSpiEraseAll();
+        sdDone();
+        spiFlashDiskEraseAll();
+        sdInit();
         vpos = 0;
         state = ST_START;
 #endif
diff --git a/radio/src/targets/common/arm/stm32/diskio_spi.cpp b/radio/src/targets/common/arm/stm32/diskio_spi.cpp
index eb479745743..c98d9ffab5d 100644
--- a/radio/src/targets/common/arm/stm32/diskio_spi.cpp
+++ b/radio/src/targets/common/arm/stm32/diskio_spi.cpp
@@ -45,6 +45,10 @@ static const stm32_spi_t _sd_spi_hw = {
     .DMA_Channel = SD_SPI_DMA_CHANNEL,
     .txDMA_Stream = SD_SPI_DMA_TX_STREAM,
     .rxDMA_Stream = SD_SPI_DMA_RX_STREAM,
+    .DMA_FIFOMode = LL_DMA_FIFOMODE_ENABLE,
+    .DMA_FIFOThreshold = LL_DMA_FIFOTHRESHOLD_1_2,
+    .DMA_MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_HALFWORD,
+    .DMA_MemBurst = LL_DMA_MBURST_INC4,
 };
 
 static uint32_t _sdcard_sectors;
diff --git a/radio/src/targets/common/arm/stm32/diskio_spi_flash.cpp b/radio/src/targets/common/arm/stm32/diskio_spi_flash.cpp
index 3f8dc014b6f..91dc07cf54f 100644
--- a/radio/src/targets/common/arm/stm32/diskio_spi_flash.cpp
+++ b/radio/src/targets/common/arm/stm32/diskio_spi_flash.cpp
@@ -64,6 +64,12 @@ static bool flashErase(uint32_t addr)
   return true;
 }
 
+static bool flashBlockErase(uint32_t addr)
+{
+  flashSpiBlockErase(addr);
+  return true;
+}
+
 static bool isFlashErased(uint32_t addr)
 {
   return flashSpiIsErased(addr);
@@ -73,9 +79,10 @@ static const FrFTLOps _frftl_cb = {
   .flashRead = flashRead,
   .flashProgram = flashWrite,
   .flashErase = flashErase,
+  .flashBlockErase = flashBlockErase,
   .isFlashErased = isFlashErased,
 };
-#endif
+#endif  // USE_FLASH_FTL
 
 static DSTATUS spi_flash_initialize(BYTE lun)
 {
@@ -188,6 +195,17 @@ static DRESULT spi_flash_ioctl(BYTE lun, BYTE ctrl, void *buff)
   return res;
 }
 
+void spiFlashDiskEraseAll()
+{
+#if defined(USE_FLASH_FTL)
+  if (frftlInitDone) {
+    ftlDeInit(&_frftl);
+    frftlInitDone = false;
+  }
+#endif
+  flashSpiEraseAll();
+}
+
 const diskio_driver_t spi_flash_diskio_driver = {
   .initialize = spi_flash_initialize,
   .status = spi_flash_status,
diff --git a/radio/src/targets/common/arm/stm32/diskio_spi_flash.h b/radio/src/targets/common/arm/stm32/diskio_spi_flash.h
index 9732d6da4fa..25379621b62 100644
--- a/radio/src/targets/common/arm/stm32/diskio_spi_flash.h
+++ b/radio/src/targets/common/arm/stm32/diskio_spi_flash.h
@@ -23,4 +23,6 @@
 
 #include "hal/fatfs_diskio.h"
 
+void spiFlashDiskEraseAll();
+
 extern const diskio_driver_t spi_flash_diskio_driver;
diff --git a/radio/src/targets/common/arm/stm32/spi_flash.cpp b/radio/src/targets/common/arm/stm32/spi_flash.cpp
index c9e25567837..c54d1b1a323 100644
--- a/radio/src/targets/common/arm/stm32/spi_flash.cpp
+++ b/radio/src/targets/common/arm/stm32/spi_flash.cpp
@@ -74,10 +74,14 @@ const stm32_spi_t _flash_spi = {
   .SPI_Pins = FLASH_SPI_SCK_GPIO_PIN | FLASH_SPI_MISO_GPIO_PIN | FLASH_SPI_MOSI_GPIO_PIN,
   .CS_GPIOx = FLASH_SPI_CS_GPIO,
   .CS_Pin = FLASH_SPI_CS_GPIO_PIN,
-  .DMA = nullptr,
-  .DMA_Channel = 0,
-  .txDMA_Stream = 0,
-  .rxDMA_Stream = 0,
+  .DMA = FLASH_SPI_DMA,
+  .DMA_Channel = FLASH_SPI_DMA_CHANNEL,
+  .txDMA_Stream = FLASH_SPI_DMA_TX_STREAM,
+  .rxDMA_Stream = FLASH_SPI_DMA_RX_STREAM,
+  .DMA_FIFOMode = LL_DMA_FIFOMODE_ENABLE,
+  .DMA_FIFOThreshold = LL_DMA_FIFOTHRESHOLD_1_2,
+  .DMA_MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_HALFWORD,
+  .DMA_MemBurst = LL_DMA_MBURST_INC4,
 };
 
 static SpiFlashDescriptor _flashDescriptor;
@@ -95,11 +99,21 @@ static inline uint8_t flash_read_byte()
   return flash_rw_byte(0xFF);
 }
 
-static void flash_rw_bytes(const uint8_t* tx, uint8_t* rx, uint16_t count)
+static inline void flash_rw_bytes(const uint8_t* tx, uint8_t* rx, uint16_t count)
 {
   stm32_spi_transfer_bytes(&_flash_spi, tx, rx, count);
 }
 
+static inline void flash_dma_read_bytes(uint8_t* buffer, uint16_t count)
+{
+  stm32_spi_dma_receive_bytes(&_flash_spi, buffer, count);
+}
+
+static inline void flash_dma_write_bytes(const uint8_t* buffer, uint16_t count)
+{
+  stm32_spi_dma_transmit_bytes(&_flash_spi, buffer, count);
+}
+
 static inline void flash_put_cmd_addr(uint8_t cmd, uint32_t addr)
 {
   addr |= cmd << 24;
@@ -293,7 +307,7 @@ uint32_t flashSpiRead(uint32_t address, uint8_t* data, uint32_t size)
   } else {
     flash_put_cmd_addr(FLASH_CMD_READ, address);
   }
-  flash_rw_bytes(0, data, size);
+  flash_dma_read_bytes(data, size);
 
   flash_unselect();
   return size;
@@ -317,7 +331,7 @@ uint32_t flashSpiWrite(uint32_t address, const uint8_t* data, uint32_t size)
   } else {
     flash_put_cmd_addr(FLASH_CMD_WRITE, address);
   }
-  flash_rw_bytes(data, 0, size);
+  flash_dma_write_bytes(data, size);
   flash_unselect();
   
   flash_wait_for_not_busy();
diff --git a/radio/src/targets/common/arm/stm32/stm32_spi.cpp b/radio/src/targets/common/arm/stm32/stm32_spi.cpp
index 7b1a2a15f22..d691d06dd58 100644
--- a/radio/src/targets/common/arm/stm32/stm32_spi.cpp
+++ b/radio/src/targets/common/arm/stm32/stm32_spi.cpp
@@ -151,8 +151,10 @@ static void _config_dma_streams(const stm32_spi_t* spi)
   dmaInit.PeriphOrM2MSrcAddress = (uint32_t)&spi->SPIx->DR;
   dmaInit.MemoryOrM2MDstIncMode = LL_DMA_MEMORY_INCREMENT;
   dmaInit.Priority = LL_DMA_PRIORITY_VERYHIGH;
-  dmaInit.FIFOMode = LL_DMA_FIFOMODE_ENABLE;
-  dmaInit.FIFOThreshold = LL_DMA_FIFOTHRESHOLD_FULL;
+  dmaInit.FIFOMode = spi->DMA_FIFOMode;
+  dmaInit.FIFOThreshold = spi->DMA_FIFOThreshold;
+  dmaInit.MemoryOrM2MDstDataSize = spi->DMA_MemoryOrM2MDstDataSize;
+  dmaInit.MemBurst = spi->DMA_MemBurst;
 
   dmaInit.Direction = LL_DMA_DIRECTION_PERIPH_TO_MEMORY;
   LL_DMA_Init(spi->DMA, spi->rxDMA_Stream, &dmaInit);
diff --git a/radio/src/targets/common/arm/stm32/stm32_spi.h b/radio/src/targets/common/arm/stm32/stm32_spi.h
index 114e411b0a5..78fa0874702 100644
--- a/radio/src/targets/common/arm/stm32/stm32_spi.h
+++ b/radio/src/targets/common/arm/stm32/stm32_spi.h
@@ -36,6 +36,10 @@ struct stm32_spi_t {
   uint32_t       DMA_Channel;
   uint32_t       txDMA_Stream;
   uint32_t       rxDMA_Stream;
+  uint32_t       DMA_FIFOMode;
+  uint32_t       DMA_FIFOThreshold;
+  uint32_t       DMA_MemoryOrM2MDstDataSize;
+  uint32_t       DMA_MemBurst;         
 };
 
 void stm32_spi_enable_clock(SPI_TypeDef *SPIx);
diff --git a/radio/src/targets/common/arm/stm32/usbd_storage_msd.cpp b/radio/src/targets/common/arm/stm32/usbd_storage_msd.cpp
index 5b2b9869977..390335dc7af 100644
--- a/radio/src/targets/common/arm/stm32/usbd_storage_msd.cpp
+++ b/radio/src/targets/common/arm/stm32/usbd_storage_msd.cpp
@@ -256,7 +256,7 @@ int8_t STORAGE_Read_FS (uint8_t lun,
   */
 int8_t STORAGE_Write_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
 {
-  WATCHDOG_SUSPEND(100/*1s*/);
+  WATCHDOG_SUSPEND(500/*5s*/);
 
 #if defined(FWDRIVE)
   if (lun == STORAGE_EEPROM_LUN)	{
diff --git a/radio/src/targets/horus/hal.h b/radio/src/targets/horus/hal.h
index 8194e6b5336..a5b7e8c4883 100644
--- a/radio/src/targets/horus/hal.h
+++ b/radio/src/targets/horus/hal.h
@@ -649,6 +649,10 @@
   #define FLASH_SPI_SCK_GPIO_PIN         LL_GPIO_PIN_5  // PA.05
   #define FLASH_SPI_MISO_GPIO_PIN        LL_GPIO_PIN_6  // PA.06
   #define FLASH_SPI_MOSI_GPIO_PIN        LL_GPIO_PIN_7  // PA.07
+  #define FLASH_SPI_DMA                  DMA2
+  #define FLASH_SPI_DMA_CHANNEL          LL_DMA_CHANNEL_3
+  #define FLASH_SPI_DMA_TX_STREAM        LL_DMA_STREAM_3
+  #define FLASH_SPI_DMA_RX_STREAM        LL_DMA_STREAM_5
   // SPI1_TX: DMA2 Stream 3 (SDIO) / Stream 5 (Ext. module timer)
   // #define FLASH_SPI_TX_DMA_CHANNEL       DMA_Channel_3
   // #define FLASH_SPI_TX_DMA_STREAM        DMA2_Stream3
@@ -671,6 +675,10 @@
   #define FLASH_SPI_SCK_GPIO_PIN         LL_GPIO_PIN_1  // PI.01
   #define FLASH_SPI_MISO_GPIO_PIN        LL_GPIO_PIN_2  // PI.02
   #define FLASH_SPI_MOSI_GPIO_PIN        LL_GPIO_PIN_3  // PI.03
+  #define FLASH_SPI_DMA                  DMA1
+  #define FLASH_SPI_DMA_CHANNEL          LL_DMA_CHANNEL_0
+  #define FLASH_SPI_DMA_TX_STREAM        LL_DMA_STREAM_4
+  #define FLASH_SPI_DMA_RX_STREAM        LL_DMA_STREAM_3
   // #define FLASH_SPI_TX_DMA_CHANNEL       DMA_Channel_0
   // #define FLASH_SPI_TX_DMA_STREAM        DMA1_Stream4
   // #define FLASH_SPI_TX_DMA_IRQn          DMA1_Stream4_IRQn
diff --git a/radio/src/targets/nv14/hal.h b/radio/src/targets/nv14/hal.h
index 5d357caed98..3552205f716 100644
--- a/radio/src/targets/nv14/hal.h
+++ b/radio/src/targets/nv14/hal.h
@@ -320,6 +320,10 @@
 #define FLASH_SPI_SCK_GPIO_PIN         LL_GPIO_PIN_13 // PG.13
 #define FLASH_SPI_MISO_GPIO_PIN        LL_GPIO_PIN_12 // PG.12
 #define FLASH_SPI_MOSI_GPIO_PIN        LL_GPIO_PIN_14 // PG.14
+#define FLASH_SPI_DMA                  DMA2
+#define FLASH_SPI_DMA_CHANNEL          LL_DMA_CHANNEL_1
+#define FLASH_SPI_DMA_TX_STREAM        LL_DMA_STREAM_5
+#define FLASH_SPI_DMA_RX_STREAM        LL_DMA_STREAM_6
 
 // SDRAM
 #define SDRAM_RCC_AHB1Periph            (RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE | RCC_AHB1Periph_GPIOF | RCC_AHB1Periph_GPIOG | RCC_AHB1Periph_GPIOH)
diff --git a/radio/src/targets/pl18/hal.h b/radio/src/targets/pl18/hal.h
index 5c297d40aa5..cd3ace7318b 100644
--- a/radio/src/targets/pl18/hal.h
+++ b/radio/src/targets/pl18/hal.h
@@ -465,14 +465,10 @@
 #define FLASH_SPI_SCK_GPIO_PIN         LL_GPIO_PIN_13 // PG.13
 #define FLASH_SPI_MISO_GPIO_PIN        LL_GPIO_PIN_12 // PG.12
 #define FLASH_SPI_MOSI_GPIO_PIN        LL_GPIO_PIN_14 // PG.14
-// #define FLASH_SPI_DMA                  DMA2
-// #define FLASH_SPI_DMA_CHANNEL          LL_DMA_CHANNEL_1
-// #define FLASH_SPI_DMA_TX_STREAM        LL_DMA_STREAM_5
-// #define FLASH_SPI_DMA_TX_IRQn          DMA2_Stream5_IRQn
-// #define FLASH_SPI_DMA_TX_IRQHandler    DMA2_Stream5_IRQHandler
-// #define FLASH_SPI_DMA_RX_STREAM        LL_DMA_STREAM_6
-// #define FLASH_SPI_DMA_RX_IRQn          DMA2_Stream6_IRQn
-// #define FLASH_SPI_DMA_RX_IRQHandler    DMA2_Stream6_IRQHandler
+#define FLASH_SPI_DMA                  DMA2
+#define FLASH_SPI_DMA_CHANNEL          LL_DMA_CHANNEL_1
+#define FLASH_SPI_DMA_TX_STREAM        LL_DMA_STREAM_5
+#define FLASH_SPI_DMA_RX_STREAM        LL_DMA_STREAM_6
 #define STORAGE_USE_SPI_FLASH
 
 // SDRAM