Here is my insecure boot image for the T-Mobile myTouch 4G Slide / aka HTC Doubleshot. This will provide you with root ADB access (for 'adb remount' etc.) In order to flash this image, you need to have temproot or permanent root via Fr3evo (grab from here, push to /data/local, run via ADB then reconnect after it drops your connection for root access). If you need ADB, you can grab it here.
You use this image at your own risk! Proceed with caution!
To install, simply...
- Download the insecure boot image file from here
- Copy the file to /data/local ('adb push doubleshot.boot.insecure.img /data/local')
- Write the image to the recovery partition ('dd if=/data/local/doubleshot.boot.insecure.img of=/dev/block/mmcblk0p20')
- Reboot to test ('adb reboot').