From 0afe0bc7a18228ad2fcef7f404b2c0bcc20419a3 Mon Sep 17 00:00:00 2001
From: LukeZGD <l32luke@gmail.com>
Date: Tue, 31 May 2022 15:43:24 +0800
Subject: [PATCH] Workaround when latest bb is not signed

should be helpful especially for iPad2,3 users
---
 resources/blobs.sh     | 17 +++++++++++------
 resources/downgrade.sh |  8 ++++++--
 resources/ipsw.sh      |  2 +-
 restore.sh             |  1 +
 4 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/resources/blobs.sh b/resources/blobs.sh
index cebb369..53f15a1 100755
--- a/resources/blobs.sh
+++ b/resources/blobs.sh
@@ -8,7 +8,7 @@ SaveOTABlobs() {
     local SHSHLatest
     local SHSHExisting
     
-    if [[ $DeviceProc != 7 && $Baseband != 0 ]]; then
+    if [[ $DeviceProc != 7 && $Baseband != 0 && $platform != "win" ]]; then
         if [[ ! -e saved/$ProductType/BuildManifest.plist ]]; then
             Log "Downloading BuildManifest of iOS $LatestVer..."
             $partialzip $BasebandURL BuildManifest.plist BuildManifest.plist
@@ -21,12 +21,17 @@ SaveOTABlobs() {
         Log "Checking signing status of iOS $LatestVer..."
         SHSHChk=*_${ProductType}_${HWModel}ap_${LatestVer}*.shsh*
         $tsschecker -d $ProductType -i $LatestVer -e $UniqueChipID -m saved/$ProductType/BuildManifest.plist -s -B ${HWModel}ap
-        SHSHLatest=$(ls $SHSHChk)
-        if [[ ! -e $SHSHLatest ]]; then
-            Error "For some reason, the latest version for your device (iOS $LatestVer) is not signed. Cannot continue."
+        SHSHLatest=$(ls $SHSHChk 2>/dev/null)
+        if [[ -e $SHSHLatest ]]; then
+            Log "Latest version for $ProductType (iOS $LatestVer) is signed."
+        else
+            Log "For some reason, the latest version for your device (iOS $LatestVer) is not signed."
+            Log "Disabling baseband update for the custom IPSW."
+            BBUpdate=0
+            [[ $Jailbreak != 1 ]] && IPSWCustom+="N"
+            IPSWCustom+="B"
         fi
-        Log "Latest version for $ProductType (iOS $LatestVer) is signed."
-        rm $SHSHLatest
+        rm $SHSHLatest 2>/dev/null
     fi
 
     Log "Saving iOS $OSVer blobs with tsschecker..."
diff --git a/resources/downgrade.sh b/resources/downgrade.sh
index 54145ce..ff53f70 100755
--- a/resources/downgrade.sh
+++ b/resources/downgrade.sh
@@ -108,11 +108,15 @@ DowngradeOther() {
 }
 
 DowngradeOTA() {
-    [[ $DeviceProc != 7 ]] && JailbreakOption
+    if [[ $DeviceProc != 7 ]]; then
+        JailbreakOption
+    fi
     SaveOTABlobs
     IPSWFindVerify
     kDFU
-    [[ $Jailbreak == 1 ]] && IPSW32
+    if [[ $Jailbreak == 1 || $BBUpdate == 0 ]]; then
+        IPSW32
+    fi
     IPSWSetExtract
     FutureRestore
 }
diff --git a/resources/ipsw.sh b/resources/ipsw.sh
index 23afb96..1a4779d 100755
--- a/resources/ipsw.sh
+++ b/resources/ipsw.sh
@@ -197,7 +197,7 @@ IPSW32() {
     fi
     if [[ $platform == "win" ]]; then
         WinBundles="windows/"
-    else
+    elif [[ $BBUpdate != 0 ]]; then
         ExtraArgs+="-bbupdate"
     fi
 
diff --git a/restore.sh b/restore.sh
index 34bdbd4..897adc7 100755
--- a/restore.sh
+++ b/restore.sh
@@ -176,6 +176,7 @@ Main() {
             fi
         fi
 
+        SaveOTABlobs
         IPSWFindVerify
         if [[ $DeviceProc == 4 ]]; then
             IPSWFindVerify 712