diff --git a/CHANGES.txt b/CHANGES.txt
index 619bf05..b321e47 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,14 @@
+v3.6.109
+- Added -I, --ihm option to update IronWolf Health Management to 2.5.1 to support recent model IronWolf and IronWolf Pro drives.
+  - For NAS with x86_64 CPUs only.
+  - Installs IronWolf Health Management on '22 series and newer models that don't have IronWolf Health Management (untested).
+
+v3.5.108
+- Prevent error message if /tmpRoot exists but does not contain /usr/syno/bin/synosetkeyvalue and /etc.defaults/synoinfo.conf. Issue #411
+
+v3.5.107
+- Bug fix for firmware version as "Found]" in db files. Issue #407
+
 v3.5.106
 - Bug fix for when script is not located on a volume. Issue #397
 
diff --git a/README.md b/README.md
index 390a4e7..ace41d2 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,8 @@ #### What the script does:
 * Checks that M.2 volume support is enabled (on models that have M.2 slots or PCIe slots).
 * Enables creating M.2 storage pools and volumes from within Storage Manager in DSM 7.2 and later **(newer models only?)**.
     * Including M.2 drives in PCIe adaptor cards like M2D20, M2D18, M2D17 and E10M20-T1 for DSM 7.2 and above **(schedule the script to run boot)**.
+* Optionally update IronWolf Health Monitor to v2.5.1 to support recent model IronWolf and IronWolf Pro drives. **(NAS with x86_64 CPUs only)**.
+    * Installs IronWolf Health Management on '22 series and newer models that don't have IronWolf Health Management **(untested)**.
 * Makes DSM recheck disk compatibility so rebooting is not needed if you don't have M.2 drives (DSM 7 only).
     * **If you have M.2 drives you may need to reboot.**
     * Reminds you that you may need to reboot the Synology after running the script.
@@ -103,6 +105,41 @@ ### Options when running the script <a name="options"></a>
       --autoupdate=AGE  Auto update script (useful when script is scheduled)
                           AGE is how many days old a release must be before
                           auto-updating. AGE must be a number: 0 or greater
+  -I, --ihm             Update IronWolf Health Monitor to 2.5.1 to support
+                        recent model IronWolf and IronWolf Pro drives
+  -h, --help            Show this help message
+  -v, --version         Show the script version
+
+  -s, --showedits       Show edits made to <model>_host db and db.new file(s)
+  -n, --noupdate        Prevent DSM updating the compatible drive databases
+  -r, --ram             Disable memory compatibility checking (DSM 7.x only)
+                        and sets max memory to the amount of installed memory
+  -f, --force           Force DSM to not check drive compatibility
+                        Do not use this option unless absolutely needed
+  -i, --incompatible    Change incompatible drives to supported
+                        Do not use this option unless absolutely needed
+  -w, --wdda            Disable WD Device Analytics to prevent DSM showing
+                        a false warning for WD drives that are 3 years old
+                          DSM 7.2.1 and later already has WDDA disabled
+  -p, --pcie            Enable creating volumes on M2 in unknown PCIe adaptor
+  -e, --email           Disable colored text in output scheduler emails
+  -S, --ssd=DRIVE       Enable write_mostly on internal HDDs so DSM primarily 
+                        reads from internal SSDs or your specified drives
+                          -S automatically sets internal SSDs as DSM preferred
+                          --ssd=DRIVE requires the fast drive(s) as argument,
+                          or restore as the argument to reset drives to default
+                          --ssd=sata1 or --ssd=sata1,sata2 or --ssd=sda etc
+                          --ssd=restore
+      --restore         Undo all changes made by the script (except -S --ssd)
+                        To restore all changes including write_mostly use
+                          --restore --ssd=restore
+      --autoupdate=AGE  Auto update script (useful when script is scheduled)
+                          AGE is how many days old a release must be before
+                          auto-updating. AGE must be a number: 0 or greater
+  -I, --ihm             Update IronWolf Health Management to 2.5.1 to support
+                        recent model IronWolf and IronWolf Pro drives.
+                        For NAS with x86_64 CPUs only.
+                        Installs IHM on '22 series and newer models (untested)
   -h, --help            Show this help message
   -v, --version         Show the script version
 ```
diff --git a/bin/dhm_tool b/bin/dhm_tool
new file mode 100644
index 0000000..3ce8e45
Binary files /dev/null and b/bin/dhm_tool differ
diff --git a/bin/dhm_tool.txt b/bin/dhm_tool.txt
new file mode 100644
index 0000000..30e0354
--- /dev/null
+++ b/bin/dhm_tool.txt
@@ -0,0 +1,12 @@
+stx_ihm from QNAP firmware, renamed dhm_tool for Synology DSM
+
+ SeaDragon_DHMr - Seagate drive utilities
+ Copyright (c) 2017-2021 Seagate Technology LLC and/or its Affiliates, All Rights Reserved
+ SeaDragon_DHMr Version: 2.5.1-2_2_3  X86_64
+ Build Date: Oct  3 2022
+
+MD5      cf67c1d5006913297f85ca7f9d1795ba
+SHA-1    163b384afabc491c97f3aa4ee7916601a9a680dd
+SHA-256  86dd0e3c5ded507d23dfeb2ca04a2e086c97a86e2ab96dc6fdeab686a8202795
+SHA-384  3d806909d445605787ceb155bc1555e01d02efe324378c9c71e6b53d91bba6bf8dbadef38dd882b43caf8dbd93eaff6c
+SHA-512  a2d87d91fd4cc298708946c9a611027dce290ba17a48c65e712b5d7e72ba04c6b5303c90efeb178a8fc690241b405691a15cc88200ab3b28319198df6bd6ad16