diff --git a/Home.md b/Home.md
index 917047c..323effc 100644
--- a/Home.md
+++ b/Home.md
@@ -53,10 +53,11 @@
     - iPad Air 1, mini 2, mini 3
     - iPod touch 6
 - Restoring with powdersn0w is supported on the following devices:
-    - iPhone 4 GSM - targets iOS 4.3 to 7.1.1
-    - iPhone 4 CDMA - targets iOS 5.0 to 7.1.1
+    - iPhone 4 GSM - targets iOS 4.0 to 7.1.1
+    - iPhone 4 CDMA - targets iOS 5.0 to 7.1.1 (4.2.x is not functional)
     - iPhone 4S, 5, 5C, iPad 2 Rev A, iPad 4, iPod touch 5 - targets iOS 5.0 to 9.3.5
-    - iPad 1, iPod touch 3 - targets iOS 4.3 to 5.1
+    - iPad 1 - targets iOS 4.3 to 5.1 (4.2.1 and 3.2.x are not functional)
+    - iPod touch 3 - targets iOS 4.0 to 5.1 (3.1.x is not functional)
     - Using powdersn0w requires iOS 7.1.x blobs for your device
         - For iPhone 5 and 5C, both 7.0.x and 7.1.x blobs can be used
         - For iPad 4, only 7.0.x blobs can be used
diff --git a/Restore-iPhone-4-and-older.md b/Restore-iPhone-4-and-older.md
index ad8e8e4..aac2ada 100644
--- a/Restore-iPhone-4-and-older.md
+++ b/Restore-iPhone-4-and-older.md
@@ -1,7 +1,7 @@
 - The procedure will be depending on your usage, operating system, and iOS device. Make sure that your setup is supported by the script. See the README for details.
 - **You do NOT need blobs to use this**.
 - This page for the restoring (and jailbreaking) the following devices **without blobs**:
-    - iPhone 4 GSM and CDMA (iPhone3,1 and 3,3) - powdersn0w (any iOS from 4.3 to 7.1.1), iOS 7.1.2
+    - iPhone 4 GSM and CDMA (iPhone3,1 and 3,3) - powdersn0w (any iOS from 4.0 to 7.1.1), iOS 7.1.2
     - Other iPhone 4 (iPhone3,2) - iOS 7.1.2
     - iPhone 3G, 3GS, iPad 1, iPod touch 2nd gen, 3rd gen - latest/lower iOS versions
     - iPhone 2G, iPod touch 1st gen - iOS 3.1.3
diff --git a/Troubleshooting.md b/Troubleshooting.md
index a462906..5f95d00 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -61,7 +61,7 @@ For 32-bit devices compatible with restores/downgrades (see README):
 - A workaround for the `cannot find serial number` error is to place an iOS 6 iBEC into the iOS 5 (or older?) IPSW. For example, create 6.1.3 and 5.1.1 IPSWs. Extract the 6.1.3 iBEC in `Firmware/dfu` and place it in the 5.1.1 IPSW. This does not guarantee that it will work, but I will put this info here just in case.
 
 # Notes for iPad 1 and iPod touch 3 powdersn0w
-- Before downgrading to 4.3.x, make sure to downgrade to 5.0 first. idk why this is needed but it works. So it's something like this: 5.1.1 -> 5.0 -> 4.3.x
+- Before downgrading to 4.3.x or lower, make sure to downgrade to 5.0 first. idk why this is needed but it works. So it's something like this: 5.1.1 -> 5.0 -> 4.3.x
 - If it still gets stuck in recovery mode after the restore to 4.3.x, try going to: Other Utilities -> Disable/Enable Exploit -> Enable exploit
 
 ## macOS
@@ -133,8 +133,10 @@ For 32-bit devices compatible with restores/downgrades (see README):
 - **B** - Baseband update is disabled for this custom IPSW
 - **H** - Hacktivation is enabled for this custom IPSW
 - **J** - The custom IPSW is created with the jailbreak option enabled
+- **N** - NOR flash IPSW for powdersn0w (used for 4.2.1 and lower targets)
 - **P** - powdersn0w is used for this custom IPSW (7.1.x base)
 - **P0** - powdersn0w is used for this custom IPSW (7.0.x base)
+- **T** - Tethered downgrade IPSW
 - **V** - The custom IPSW is created with the verbose option enabled
 
 ## DFU Advanced Menu for 32-bit devices