diff --git a/Source/Core/Core/Boot/Boot.cpp b/Source/Core/Core/Boot/Boot.cpp
index 44d1cbd39d..11df85d0c4 100644
--- a/Source/Core/Core/Boot/Boot.cpp
+++ b/Source/Core/Core/Boot/Boot.cpp
@@ -3,10 +3,11 @@
 // Refer to the license.txt file included.
 
 
+#include <zlib.h>
+
 #include "Common/CommonPaths.h"
 #include "Common/CommonTypes.h"
 #include "Common/FileUtil.h"
-#include "Common/Hash.h"
 #include "Common/MathUtil.h"
 #include "Common/StringUtil.h"
 
@@ -151,30 +152,37 @@ bool CBoot::LoadMapFromFilename()
 // It does not initialize the hardware or anything else like BS1 does.
 bool CBoot::Load_BS2(const std::string& _rBootROMFilename)
 {
-	const u32 USA = 0x1FCE3FD6;
-	const u32 USA_v1_1 = 0x4D5935D1;
-	const u32 JAP = 0x87424396;
-	const u32 PAL = 0xA0EA7341;
-	//const u32 PanasonicQJ = 0xAEA8265C;
-	//const u32 PanasonicQU = 0x94015753;
+	// CRC32
+	const u32 USA_v1_0 = 0x6D740AE7; // https://forums.dolphin-emu.org/Thread-unknown-hash-on-ipl-bin?pid=385344#pid385344
+	const u32 USA_v1_1 = 0xD5E6FEEA; // https://forums.dolphin-emu.org/Thread-unknown-hash-on-ipl-bin?pid=385334#pid385334
+	const u32 USA_v1_2 = 0x86573808; // https://forums.dolphin-emu.org/Thread-unknown-hash-on-ipl-bin?pid=385399#pid385399
+	const u32 JAP_v1_0 = 0x6DAC1F2A; // Redump
+	const u32 JAP_v1_1 = 0xD235E3F9; // https://bugs.dolphin-emu.org/issues/8936
+	const u32 PAL_v1_0 = 0x4F319F43; // Redump
+	const u32 PAL_v1_2 = 0xAD1B7F16; // Redump
 
 	// Load the whole ROM dump
 	std::string data;
 	if (!File::ReadFileToString(_rBootROMFilename, data))
 		return false;
 
-	u32 ipl_hash = HashAdler32((const u8*)data.data(), data.size());
+	// Use zlibs crc32 implementation to compute the hash
+	u32 ipl_hash = crc32(0L, Z_NULL, 0);
+	ipl_hash = crc32(ipl_hash, (const Bytef*)data.data(), (u32)data.size());
 	std::string ipl_region;
 	switch (ipl_hash)
 	{
-	case USA:
+	case USA_v1_0:
 	case USA_v1_1:
+	case USA_v1_2:
 		ipl_region = USA_DIR;
 		break;
-	case JAP:
+	case JAP_v1_0:
+	case JAP_v1_1:
 		ipl_region = JAP_DIR;
 		break;
-	case PAL:
+	case PAL_v1_0:
+	case PAL_v1_2:
 		ipl_region = EUR_DIR;
 		break;
 	default: