[GUIDE] Simple ENG S-OFF
Edit: This method will most likely require radio s-off to work. Not as useful as I thought first but still less hassle if you often switch from ruu stock to custom roms.
I recently wanted to go from stock 1.72 to CM7 and didn't want to go through downgrades etc. so I simply took a test PD98IMG.zip and removed everything except the hboot (which is eng s-off) and placed on the SD-card. I then rebooted into bootloader and it flashed the new hboot for me. It was then easy to flash recovery using fastboot.
Since it was so easy and I didn't manage to find this method described I decided to create this thread. Feel free to move/remove if this is old news.
I tested this on my phone several times using the zip below. I do however not guarantee anything.
1. Download file PD98IMG.zip
2. Copy to SD-card.
3. Reboot to bootloader ("adb reboot-bootloader" or restart phone with volume down pressed)
4. Follow on-screen instructions