JahnDough's RGH 3.0 No-Flasher Softmod-to-Hardmod Bridge Guide (Jasper Model)

[Dark Destiny]

JahnDough's RGH 3.0 No-Flasher Softmod-to-Hardmod Bridge Guide (Jasper Model)

Console: Xbox 360 Fat (Jasper - 16MB NAND)
Method: BadUpdate Exploit + RGH 3.0 (No Glitch Chip / No Hardware Flasher)
Author: JahnDough

Overview

This guide walks you through how to softmod a Jasper Xbox 360 using the BadUpdate exploit and turn it into a full RGH 3.0 hardmod without using a hardware NAND flasher. This method bridges the gap between softmod and hardmod, allowing full unsigned code execution with just a USB drive, a soldering iron, and a few components.

Tools & Materials

Hardware:

• USB drive (FAT32)

• Xbox 360 Hard Drive (must be connected for exploit to work)

• Soldering iron (fine tip, ~350°C recommended)

• Flux

• Solder

• Kapton tape

• Shrink tubing (optional)

• 91%+ isopropyl alcohol

• Good lighting or headlamp

• 30AWG wire (two colors recommended)

• 22KΩ resistor

• 1N4148 diode

Software:

• Modern Vintage Gamer's BadUpdate tutorial

• MrMario2011's RGH 3.0 Jasper Tutorial (start at 38:49)

• XEXMenu (patched with XePatcher)

• XeLL Reloaded (patched with XePatcher)

• Simple 360 NAND Flasher (patched with XePatcher)

• J-Runner with Extras

• XePatcher (Windows app)

Important Notes Before You Begin

• For Jasper consoles with 16MB NANDs

• Must be on dashboard 17559

• Stock NAND + RGH3 wiring = RROD

• RGH3 NAND with no wiring = RROD

• Keep a hardware flasher on hand just in case

Step 1: Prepare & Run BadUpdate Exploit

1. Follow MVG's video: https://youtu.be/IUK__yGXmds Uses Rock Band Blitz trial to trigger the exploit

2. Load patched XEXMenu + Simple 360 NAND Flasher onto USB

3. Boot exploit and launch NAND Flasher via XEXMenu

4. Dump NAND:

   • flashdmp.bin

   • cpukey.txt

5. Also launch XeLL to verify CPU key

6. Back up everything to your PC

Step 2: Build RGH3 NAND Image

1. Open J-Runner with Extras

2. Load flashdmp.bin

3. Paste in your CPU key

4. XeBuild Options:

   • Kernel: 17559

   • Glitch: Glitch2

   • RGH: RGH3

   • MHz: 27

5. Click Create XeBuild

6. Copy updflash.bin to the USB drive with NAND Flasher

Step 3: Flash the RGH3 NAND

1. Boot into exploit again

2. Launch NAND Flasher

3. Ensure updflash.bin is in the same folder

4. Follow on-screen instructions:

   • Dumps NAND to recovery.bin

   • Flashes updflash.bin

5. Red ring after flashing is normal

Step 4: RGH3 Wiring

 Follow MrMario2011’s tutorial (start at 38:49) for soldering instructions.

• Only 2 wires, 4 solder points

• Use 1N4148 diode + 22KΩ resistor as shown

• No top-side points needed

• Keep wires short, clean, and secure with Kapton tape

Step 5: First Boot

• Reassemble and power on

• Console should glitch into XeLL Reloaded

Boot times so far:

• NXE Dashboard: ~22 seconds

• XeLL: under 1 minute

Further testing ongoing, but it’s working reliably!

Warnings

• Patch all .xex files with XePatcher (XEXMenu, XeLL, NAND Flasher, etc.)

• Never update the dash from Xbox Live

• Never sign in to Xbox Live with this console

• Never lose your NAND backups

Outro

Confirmed working on a Jasper. Testing on Slim consoles is coming next. This is a new RGH 3.0 method that bridges softmod and hardmod with no chip or flasher required.

Created and tested by: JahnDough

Original post on reddit :