Those who have recently updated their baseband to 06.15.00 so as to jailbreak and unlock their iPhone have been facing battery drain issues. This problem is not caused by UltraSn0w or RedSn0w, but by the hacktivation process.
Precisely, due to hacktivation, iOS 4.1 and 4.2.1 constantly keeps on looking for valid push certificates either via wifi or via your data plan (Edge or 3G). As a result, this continious process runs down your battery- it does not give your battery a break and it may even led to the overheating of your iPhone. However, If you didn’t hacktivate your iPhone but simply activated it with an official carrier then you should not face this problem.
Developer @sbingner (author of TetherMe) has made some excellent progress devising a new hactivation method that kills two birds with one stone for all you ultrasn0w unlockers. His tool, “Subscriber Artificial Module (SAM)” tricks your iPhone and iTunes into creating legitimate activation tickets even though you’re unlocked with ultrasn0w. This means you get the full benefit of push applications, and your battery life increases substantially.
On his website, Sbingner explains how to fix this problem by tricking your iPhone and iTunes:
Step 1: Add the following repo in Cydia: http://repo.bingner.com
Step 2: Install “SAM” and “SAMPrefs” from this repo.
Step 3: Now you must revert to a stock lockdownd for SAM to function. To do so, download RedSn0w 0.9.6b6 or Mac or RedSn0w 0.9.6b6 for Windows and then launch RedSn0w. After this, select the “Deactivate” option.
Step 4: Go to Settings > SAM, then click “De-Activate iPhone”.
Step 5: Make sure iTunes is on, plug your iPhone and let iTunes activate your iPhone. If iTunes says “Invalid SIM”, you will need to manually select a carrier under Seetings > Carrier.
Step 6: If you depend on unlocking, you may then unlock your iPhone using UltraSn0w. See our How to Unlock tutorial here.
That is it, your battery drain issue should be fixed!
ERRRR... am I missing something here. do we just need to open RedSn0w and not do the restore or anything. I would think this would require a full restore and rejailbreak. If not then YAY, but it seems much too easy. don't quite see the sense of order here. Installing the SAM apps and THEN jailbreaking again?
ReplyDeleteI've done exactly as is outlined here. there may be SOME change, but not substantial. still not getting a day out of a full charge.
Update...
ReplyDeletejust ran again and actually got the message for Invalid SIM, so Im guessing the deactivate didn't take last time. Still curious about why RedSn0w needs to be running with no mention of going through the process of jailbreaking again, but we'll see how this goes this time around.