diff --git a/flashchips.c b/flashchips.c
index 82bb5b50d..a9fd1bfd2 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -17597,7 +17597,7 @@ const struct flashchip flashchips[] = {
 
 	{
 		.vendor		= "Winbond",
-		.name		= "W25Q256.W",
+		.name		= "W25Q256JW",
 		.bustype	= BUS_SPI,
 		.manufacture_id	= WINBOND_NEX_ID,
 		.model_id	= WINBOND_NEX_W25Q256_W,
@@ -17605,19 +17605,24 @@ const struct flashchip flashchips[] = {
 		.page_size	= 256,
 		/* supports SFDP */
 		/* OTP: 1024B total, 256B reserved; read 0x48; write 0x42, erase 0x44, read ID 0x4B */
-		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA_ENTER_WREN
-			| FEATURE_4BA_EXT_ADDR | FEATURE_4BA_READ | FEATURE_4BA_FAST_READ,
+		.feature_bits	= FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA,
 		.tested		= TEST_OK_PREW,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
 		.block_erasers	=
 		{
 			{
+				.eraseblocks = { {4 * 1024, 8192} },
+				.block_erase = spi_block_erase_21,
+			}, {
 				.eraseblocks = { {4 * 1024, 8192} },
 				.block_erase = spi_block_erase_20,
 			}, {
 				.eraseblocks = { {32 * 1024, 1024} },
 				.block_erase = spi_block_erase_52,
+			}, {
+				.eraseblocks = { {64 * 1024, 512} },
+				.block_erase = spi_block_erase_dc,
 			}, {
 				.eraseblocks = { {64 * 1024, 512} },
 				.block_erase = spi_block_erase_d8,