actually no issues on ams 0.20.0; add 1728.0 and 1795.2 MHz for Hynix DRAM; nx2elf recompiled for release (previously debug ver requires -d.dll runtime); idk windows is transitioning to windows terminal(powershell), so batch script is made for less confusion

PatchTools/Patcher.bat

@@ -0,0 +1,38 @@
+@echo off
+if not exist .\prod.keys (
+echo prod.key NOT FOUND!
+pause
+EXIT
+)
+if not exist .\pcv-backup (
+echo pcv-backup NOT FOUND!
+pause
+EXIT
+)
+if not exist .\pcv-bspatch (
+echo pcv-bspatch NOT FOUND!
+pause
+EXIT
+)
+if exist .\pcv-module (
+echo You have generated patched pcv module, do you want to delete and regenerate it?
+pause
+del .\pcv-module
+)
+rd /S /Q .\temp\
+rd /S /Q .\hacpack_backup\
+del .\*.nca
+mkdir .\temp
+mkdir .\temp\pcv_exefs
+hactool -k prod.keys --disablekeywarns -t -nca .\pcv-backup --exefsdir .\temp
+nx2elf .\temp\main
+bspatch .\temp\main.elf .\temp\main-mod.elf .\pcv-bspatch
+elf2nso .\temp\main-mod.elf .\temp\pcv_exefs\main
+copy .\temp\main.npdm .\temp\pcv_exefs\
+hacpack -k prod.keys -o .\ --type nca --ncatype program --titleid 010000000000001A --exefsdir .\temp\pcv_exefs\
+ren *.nca pcv-module
+echo Press any key to remove temp files
+pause
+rd /S /Q .\temp\
+rd /S /Q .\hacpack_backup\
+exit

README.md

@@ -2,14 +2,12 @@
 
 Overclocking suite for Switch **(Mariko Only)** running on Atmosphere CFW.
 
-For Horizon OS 11.0.x ~ 12.1.0. (AIO Package only supports the latest OS version for easier maintenance.)
+Support latest Horizon OS (12.1.0) and Atmosphere (0.20.0).
 
 
 
 ## Notice
 
-- Except for 1600 MHz, RAM OC has been broken since Atmosphere 0.20.0 introduces DRAM training for Mariko. **Currently under investigation.**
-
 ### Disclaimer
 
 **Proceed with caution!**
@@ -33,7 +31,8 @@ For Horizon OS 11.0.x ~ 12.1.0. (AIO Package only supports the latest OS version
 
 - **Overclock**
   - **Recommended CPU/GPU clock is 2295.0/1305.6 MHz**, since max clock(2397.0/1344.0 MHz) may not work on some SoCs.
-  - **Recommended RAM clock is 1862.4 MHz** for most DRAM chips, **except Hynix ones. RAM clock is set** permanently via **ptm-patch**, rather than sys-clk, considering the ability to select other clocks than the max one is lost if RAM OC takes into effect, and the impact of added power consumption is negligible.
+  - **Recommended RAM clock is 1862.4 MHz** for most DRAM chips, **except Hynix ones** (1795.2/1728.0 MHz).
+    - **RAM clock is set permanently** via **ptm-patch**, rather than sys-clk, considering the ability to select other clocks than the max one is lost if RAM OC takes into effect, and the impact of added power consumption is negligible.
     - Use Hekate to check out the brand of your RAM chips.
     - Choose RAM clock with care, or your eMMC filesystem will be **corrupted**.
     - Once RAM overvolting is available on Mariko, we may gain more stability and reach higher clock.
@@ -92,6 +91,7 @@ For Horizon OS 11.0.x ~ 12.1.0. (AIO Package only supports the latest OS version
 **Notice**:
 - **Patching SysNAND is NOT recommended**. Since system files are directly altered, you could **NOT** boot to stock(OFW) until you revert the patch, and ban risks exist (?).
 - **Restoring pcv backup is required before updating** Horizon OS and booting OFW. Launch the `patcher.te` script to restore your backup.
+- **Do NOT forget to reapply ptm-patch** after changing RAM OC clock.
 
 **Steps:**
 1. Make sure you are running targeted HOS (12.1.0), and have `prod.keys` *with latest master key (0b)* dumped by [Lockpick_RCM](https://github.com/shchmue/Lockpick_RCM).
@@ -110,23 +110,7 @@ For Horizon OS 11.0.x ~ 12.1.0. (AIO Package only supports the latest OS version
 6. Select RAM frequency and prepare the patches: 
    - Copy the `/atmosphere/oc_patches/xx-xxxx.x/ptm-patch` folder ->`/atmosphere/exefs_patches/` on your SD card.
    - Copy `/atmosphere/oc_patches/xx-xxxx.x/pcv-bspatch` -> `PatchTools` on your PC.
-7. Open `cmd.exe`, change working directory to the `PatchTools` folder and type in the following commands.
-   Assuming that you put the folder on your Desktop:
-   ```cmd
-   cd %USERPROFILE%\Desktop\PatchTools
-   mkdir .\temp
-   mkdir .\temp\pcv_exefs
-   hactool -k prod.keys --disablekeywarns -t -nca .\pcv-backup --exefsdir .\temp
-   nx2elf .\temp\main
-   bspatch .\temp\main.elf .\temp\main-mod.elf .\pcv-bspatch
-   elf2nso .\temp\main-mod.elf .\temp\pcv_exefs\main
-   copy .\temp\main.npdm .\temp\pcv_exefs\
-   hacpack -k prod.keys -o .\ --type nca --ncatype program --titleid 010000000000001A --exefsdir .\temp\pcv_exefs\
-   ren *.nca pcv-module
-   rd /S /Q .\temp\
-   rd /S /Q .\hacpack_backup\
-   
-   ```
+7. Run `Patcher.bat` in PatchTools (Do NOT use admin privileges).
 8. Move the patched `pcv-module` to `/atmosphere/oc_patches/`.
 9. In TegraExplorer, `Browse SD` -> `patcher.te` -> `Launch Script` and then `Apply Patched PCV Module`.
 10. Wait for `Done!` and then reboot to enjoy.

Source/Atmosphere/ldr_pcv_patch.cpp

@@ -24,7 +24,7 @@ namespace ams::ldr {
             { 0xD7C60, 0xD7C68, 0xD7C70, 0xD7C78, 0xD7C80, 0xD7C88, 0xD7C90, 0xD7C98, 0xD7CA0, 0xD7CA8, 0xE1800, 0xEEFA0, 0xF2478, 0xFE284, 0x10A304, 0x10D7DC, 0x110A40, 0x113CA4, 0x116F08, 0x11A16C, 0x11D3D0, 0x120634, 0x123898, 0x126AFC, 0x129D60, 0x12CFC4, 0x130228, 0x13BFE0, 0x140D00, 0x140D50, },
             { 0xE1810, 0xE6530, 0xE6580, 0xE6AB0, 0xE6AB8, 0xE6AC0, 0xE6AC8, 0xE6AD0, 0xE6AD8, 0xE6AE0, 0xE6AE8, 0xE6AF0, 0xE6AF8, 0xF0650, 0xFDDF0, 0x1012C8, 0x10D0D4, 0x119154, 0x11C62C, 0x11F890, 0x122AF4, 0x125D58, 0x128FBC, 0x12C220, 0x12F484, 0x1326E8, 0x13594C, 0x138BB0, 0x13BE14, 0x13F078, }
         };
-        // RAM freqs to choose: 1731200, 1862400, 1996800, 2131200
+        // RAM freqs to choose: 1600000, 1728000, 1795200, 1862400, 1894400, 1932800, 1996800, 2064000, 2099200, 2131200
         constexpr u32 NewEmcFreq = 1862400;
         // RAM overclock could be UNSTABLE on some RAM without bumping up voltage,
         // and therefore show graphical glitches, hang randomly or even worse, corrupt your NAND

Source/Patch/12-ptm.pchtxt

@@ -1,7 +1,7 @@
 @nsobid-A79706954C6C45568B0FFE610627E2E89D8FB0D4
 @flag offset_shift 0x100
 
-// PTM PerformanceConfiguration Patch for 12.0.x
+// PTM PerformanceConfiguration Patch for 12.0.x-12.1.0
 // Change all RAM freqs to 1862.4 MHz and Boost CPU freqs to 1963.5 MHz by default
 // RAM
 // 1600.0 MHz - 00105E5F