diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 6039e1f..929f9a9 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -1874,6 +1874,10 @@ static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
 			    info->device_id == 0x22D7) { /* M29W800DT */
 				cfi_reverse_geometry(qry);
 			}
+		} else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
+			/* CFI >= 1.1, deduct from top/bottom flag */
+			/* note: ext_addr is valid since cfi_version > 0 */
+			cfi_reverse_geometry(qry);
 		}
 	}
 }