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Old September 4th, 2013, 09:39 AM   #5 (permalink)
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Join Date: Aug 2012
Location: Indianapolis, IN
Posts: 662
Device(s): ZTE Warp, Samsung Galaxy Prevail
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Originally Posted by jhawkkw View Post
The cache partition isn't big enough for full rom installs unfortunately. All stock roms from Samsung/Verizon are indeed signed which is how the bootloader knows to allow them to boot. If it reads something with an incorrect signature, that leads you to that error screen about unauthorized software and needing to go to Verizon to fix it. So the only way to do so is to either figure out what that signature is (next to impossible), or find someway around it.
I didn't mean actually putting the rom into /cache...mind you I've only done this on my ZTE Warp (the S4 is my friends) but I have the rom on the sdcard and use ADB shell:
echo "boot-recovery" > /cache/recovery/command
echo "--update_package=/sdcard/" >> /cache/recovery/command
echo "--wipe_cache" >> /cache/recovery/command
reboot recovery
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