diff --git a/finalize/source/main.c b/finalize/source/main.c
index 7066583..8aed4d1 100644
--- a/finalize/source/main.c
+++ b/finalize/source/main.c
@@ -6,7 +6,7 @@
 #include "basetik_bin.h"
 
 #define CIFINISH_PATH "/cifinish.bin"
-#define REQUIRED_VERSION 1
+#define REQUIRED_VERSION 2
 
 // 0x10
 struct finish_db_header {
@@ -15,42 +15,36 @@ struct finish_db_header {
 	u32 title_count;
 };
 
-// 0x30
+// 0x20
 struct finish_db_entry {
-	u64 title_id;
-	u8 common_key_index;
-	bool has_seed;
 	u8 magic[6]; // "TITLE" and a null byte
-	u8 title_key[0x10];
+	bool has_seed;
+	u64 title_id;
 	u8 seed[0x10];
 };
 
 // 0x350
 struct ticket_dumb {
-	u8 unused1[0x1BF];
-	u8 title_key[0x10];
-	u8 unused2[0xD];
+	u8 unused1[0x1DC];
 	u64 title_id_be;
-	u8 unused3[0xD];
-	u8 common_key_index;
-	u8 unused4[0x15E];
+	u8 unused2[0x16C];
 } __attribute__((packed));
 
 // from FBI:
 // https://github.com/Steveice10/FBI/blob/6e3a28e4b674e0d7a6f234b0419c530b358957db/source/core/http.c#L440-L453
 static Result FSUSER_AddSeed(u64 titleId, const void* seed) {
-    u32 *cmdbuf = getThreadCommandBuffer();
+	u32 *cmdbuf = getThreadCommandBuffer();
 
-    cmdbuf[0] = 0x087A0180;
-    cmdbuf[1] = (u32) (titleId & 0xFFFFFFFF);
-    cmdbuf[2] = (u32) (titleId >> 32);
-    memcpy(&cmdbuf[3], seed, 16);
+	cmdbuf[0] = 0x087A0180;
+	cmdbuf[1] = (u32) (titleId & 0xFFFFFFFF);
+	cmdbuf[2] = (u32) (titleId >> 32);
+	memcpy(&cmdbuf[3], seed, 16);
 
-    Result ret = 0;
-    if(R_FAILED(ret = svcSendSyncRequest(*fsGetSessionHandle()))) return ret;
+	Result ret = 0;
+	if(R_FAILED(ret = svcSendSyncRequest(*fsGetSessionHandle()))) return ret;
 
-    ret = cmdbuf[1];
-    return ret;
+	ret = cmdbuf[1];
+	return ret;
 }
 
 void finalize_install(void)
@@ -82,6 +76,23 @@ void finalize_install(void)
 		return;
 	}
 
+	if (header.version != REQUIRED_VERSION)
+	{
+		printf("\n%s was created with a different\n", CIFINISH_PATH);
+		printf("  version of custom-install than this one\n");
+		printf("  supports.\n\n");
+		printf("Make sure you are using the latest version of\n");
+		printf("  custom-install and custom-install-finalize\n");
+		printf("  from the repository on GitHub.\n\n");
+		printf("When you run the script again, you can use\n");
+		printf("  --skip-contents to avoid re-writing the title\n");
+		printf("  contents, so only the Title Database and\n");
+		printf("  cifinish.bin will be modified.\n\n");
+		printf("Expected version %i, got %li\n", REQUIRED_VERSION, header.version);
+		fclose(fp);
+		return;
+	}
+
 	entries = calloc(header.title_count, sizeof(struct finish_db_entry));
 	fread(entries, sizeof(struct finish_db_entry), header.title_count, fp);
 	fclose(fp);
@@ -97,8 +108,6 @@ void finalize_install(void)
 		printf("Finalizing %016llx...\n", entries[i].title_id);
 
 		ticket_buf.title_id_be = __builtin_bswap64(entries[i].title_id);
-		ticket_buf.common_key_index = entries[i].common_key_index;
-		memcpy(ticket_buf.title_key, entries[i].title_key, 0x10);
 
 		res = AM_InstallTicketBegin(&ticketHandle);
 		if (R_FAILED(res))
@@ -148,7 +157,7 @@ int main(int argc, char* argv[])
 	gfxInitDefault();
 	consoleInit(GFX_TOP, NULL);
 
-	puts("custom-install-finalize v1.0");
+	puts("custom-install-finalize v1.1");
 
 	finalize_install();
 	puts("\nPress START or B to exit.");