How to Restore iDevice if You Used Saïgon Beta 2 and Stashed the System?

Cheesecakeufo confirmed on discord that beta 2 did not place a cydianostash file in the root directory. Beta 2 rev 1 fixes this issue.

Note that if you used beta 2 after having previously using beta 1, you would be probably okay.

If you just used beta 2, but you haven't opened Cydia yet, please don't reboot immediately or install beta 2 rev 1.

If beta 2 was the first jailbreak you used, you stashed your system, HS icons are missing, etc. and you have not rebooted yet, please follow this guide:

EDIT: If you have shsh2 blobs for 10.2.1, and you're on iPhone 6S, use Prometheus to restore. It's far safer. If not, continue below.

Step 1 Download the Cydia Eraser iOS 10 deb file (saurik claims its compatible 10.0-10.3.3) to your computer

Note that its still very untested on 10.2.1+ but the only other choice is to update

Step 2 Download the open deb to your computer as well.

Step 3 Use iFunBox or iExplorer to place both deb files in the“General Storage”of the device. As long as you can copy the debs to /var/mobile/Media (which you should be able to do even on a jailed device)

Step 4 Connect to ssh over USB. If you know your device’s IP, all you have to do is plug your device into your computer and type “ssh root@deviceIP” into Terminal (mac) or PuTTY (win)

If your don’t know your device’s IP address (and obviously you can’t access it in settings since your settings app is stashed), check this out.

Step 5 Type the following into your Terminal:

su
[Password is alpine unless you changed it]
cd /var/mobile/Media
dpkg -i Eraser_0.9.42+1.g4d37796.deb
dpkg -i open_1.1.1-1.deb
open com.saurik.impactor

Step 6 If all went right, Cydia Eraser should open. Tap the big red button at the bottom.

Step 7 If anything went wrong, you’ll probably have to iTunes restore. Sorry, but this is why betas are a thing: hopefully to weed out problems like this.