diff --git a/spi25.c b/spi25.c
index c5832fb..60ddb96 100644
--- a/spi25.c
+++ b/spi25.c
@@ -569,6 +569,13 @@
 }
 
 /* Erase 32 KB of flash with 4-bytes address from ANY mode (3-bytes or 4-bytes) */
+int spi_block_erase_53(struct flashctx *flash, unsigned int addr, unsigned int blocklen)
+{
+	/* This usually takes 100-4000ms, so wait in 100ms steps. */
+	return spi_write_cmd(flash, 0x53, true, addr, NULL, 0, 100 * 1000);
+}
+
+/* Erase 32 KB of flash with 4-bytes address from ANY mode (3-bytes or 4-bytes) */
 int spi_block_erase_5c(struct flashctx *flash, unsigned int addr, unsigned int blocklen)
 {
 	/* This usually takes 100-4000ms, so wait in 100ms steps. */
@@ -597,6 +604,8 @@
 		return &spi_block_erase_50;
 	case 0x52:
 		return &spi_block_erase_52;
+	case 0x53:
+		return &spi_block_erase_53;
 	case 0x5c:
 		return &spi_block_erase_5c;
 	case 0x60: