diff --git a/mik32_spifi.py b/mik32_spifi.py
index c3911d6..cca07f2 100644
--- a/mik32_spifi.py
+++ b/mik32_spifi.py
@@ -307,6 +307,32 @@ def spifi_sector_erase(openocd: OpenOcdTclRpc, address: int):
     spifi_wait_intrq_timeout(openocd, "Timeout executing chip erase command")
 
 
+def spifi_check_erase(openocd: OpenOcdTclRpc, address: int, byte_count: int):
+    print(f"Checking erase from {address:#0x} to {(byte_count-1):#0x}")
+
+    read_data: List[int] = []
+    openocd.write_word(SPIFI_CONFIG_ADDR, address)
+
+    spifi_intrq_clear(openocd)
+    openocd.write_word(SPIFI_CONFIG_CMD, (READ_DATA_COMMAND << SPIFI_CONFIG_CMD_OPCODE_S) |
+                       (SPIFI_CONFIG_CMD_FRAMEFORM_OPCODE_3ADDR << SPIFI_CONFIG_CMD_FRAMEFORM_S) |
+                       (SPIFI_CONFIG_CMD_FIELDFORM_ALL_SERIAL << SPIFI_CONFIG_CMD_FIELDFORM_S) |
+                       (byte_count << SPIFI_CONFIG_CMD_DATALEN_S))
+    # spifi_wait_intrq_timeout(openocd, "Timeout executing read data command")
+    for i in range(byte_count):
+        data8 = openocd.read_memory(SPIFI_CONFIG_DATA32, 8, 1)[0]
+        read_data.append(data8)
+        if config.is_verbose:
+            print(f"DATA[{i+address}] = {read_data[i]:#0x}")
+
+    for i in range(byte_count):
+        if read_data[i] != 0:
+            print(f"DATA[{(i+address):#0x}] = {read_data[i]:#0x}, expected {0:#0x}")
+            return 1
+    
+    return 0
+
+
 def spifi_read_data(openocd: OpenOcdTclRpc, address: int, byte_count: int, bin_data: List[int]) -> int:
     read_data: List[int] = []
     openocd.write_word(SPIFI_CONFIG_ADDR, address)
@@ -326,7 +352,7 @@ def spifi_read_data(openocd: OpenOcdTclRpc, address: int, byte_count: int, bin_d
     for i in range(byte_count):
         if read_data[i] != bin_data[i]:
             print(f"DATA[{(i+address):#0x}] = {read_data[i]:#0x}, expected {bin_data[i]:#0x}")
-            # return 1
+            return 1
     
     return 0
 
@@ -335,6 +361,7 @@ def spifi_page_program(openocd: OpenOcdTclRpc, ByteAddress: int, data: List[int]
     if byte_count > 256:
         raise Exception("Byte count more than 256")
 
+    print("Writing page %s..." % hex(ByteAddress))
     # spifi_intrq_clear(openocd)
     openocd.write_word(SPIFI_CONFIG_STAT, openocd.read_word(
         SPIFI_CONFIG_STAT) | SPIFI_CONFIG_STAT_INTRQ_M)
@@ -366,11 +393,13 @@ def spifi_erase(openocd, erase_type: EraseType = EraseType.CHIP_ERASE, sectors:
         spifi_write_enable(openocd)
         spifi_chip_erase(openocd)
         spifi_wait_busy(openocd)
+        spifi_check_erase(openocd, 0, 65536)
     elif erase_type == EraseType.SECTOR_ERASE:
         for sector in sectors:
             spifi_write_enable(openocd)
             spifi_sector_erase(openocd, sector)
             spifi_wait_busy(openocd)
+            spifi_check_erase(openocd, 0, 4096)
 
 
 def spifi_write(openocd: OpenOcdTclRpc, address: int, data: List[int], data_len: int):
@@ -419,6 +448,7 @@ def spifi_quad_page_program(openocd: OpenOcdTclRpc, ByteAddress: int, data: List
     if byte_count > 256:
         raise Exception("Byte count more than 256")
 
+    print("Writing page %s..." % hex(ByteAddress))
     # spifi_intrq_clear(openocd)
     openocd.write_word(SPIFI_CONFIG_STAT, openocd.read_word(
         SPIFI_CONFIG_STAT) | SPIFI_CONFIG_STAT_INTRQ_M)
@@ -494,7 +524,6 @@ def write_pages(pages: Dict[int, List[int]], openocd: OpenOcdTclRpc, is_resume=T
     spifi_quad_enable(openocd)
 
     for page_offset in list(pages):
-        print("Writing page %s..." % hex(page_offset))
         page_bytes = pages[page_offset]
 
         spifi_write_enable(openocd)
diff --git a/mik32_upload.py b/mik32_upload.py
index 7c485c1..fed0538 100644
--- a/mik32_upload.py
+++ b/mik32_upload.py
@@ -200,7 +200,7 @@ def upload_file(
             openocd_path, scripts_path), posix=False)
         print(cmd)
         proc = subprocess.Popen(
-            cmd)
+            cmd, creationflags=subprocess.CREATE_NEW_CONSOLE | subprocess.SW_HIDE)
 
     with OpenOcdTclRpc() as openocd:
         pages_eeprom = segments_to_pages(list(filter(