Believe it or not! It a hardware malfunction, not firmware/software!!!
Bought a bootloop STU, spent days trying to fix it. Finally out of anger squeezed the phone and it booted properly! I took it apart, and started putting pressure in different spots, focusing on cables, good thing there was only one!
The following symptoms must ALL apply:
Phone must be able to boot into download mode (volume down + camera + power)
Phone must NOT be able to boot into recovery (volume down + power)
Phone must flash valid files in download mode without error (no error, but phone still boot loops)
If out of anger and frustration, you press the power button and squeeze the life out of the phone. IT WILL BOOT EVERY TIME AND NOT FREEZE PROVIDED YOU DON'T LET GO.
The following symptoms will happen randomly:
Phone actually boots once in a blue moon, but eventually freezes
(Also, if your sound seems very quite, or non existent or the vibrate is missing or intermittent, you might have the above symptoms eventually)
If the above applies, like the original post, then this is the fix for you
If you take the 5 silver screws and the two black screws off, open the back case.
Take the silver radio interference shield off. On the bottom left you will see a black ribbon cable. if you look at the plastic cover you just took off, you will see a rectangle piece of metal shielding. You want to fold up a strip of paper into the same shape as that metal shielding. This puts pressure on the faulty ribbon cable. Put every thing back together. make sure the paper between the metal shield and the ribbon cable is thick enough that once everything is screwed in, it still works. WILL NOT WORK UNTIL ALL THE SCREWS ARE BACK IN. (Cheap test, put everything on, but leave the screws out, press on the case and see if the phone turns on, if so, try the screws, if it doesn't work then, add more paper)
Bought a bootloop STU, spent days trying to fix it. Finally out of anger squeezed the phone and it booted properly! I took it apart, and started putting pressure in different spots, focusing on cables, good thing there was only one!
The following symptoms must ALL apply:
Phone must be able to boot into download mode (volume down + camera + power)
Phone must NOT be able to boot into recovery (volume down + power)
Phone must flash valid files in download mode without error (no error, but phone still boot loops)
If out of anger and frustration, you press the power button and squeeze the life out of the phone. IT WILL BOOT EVERY TIME AND NOT FREEZE PROVIDED YOU DON'T LET GO.
The following symptoms will happen randomly:
Phone actually boots once in a blue moon, but eventually freezes
(Also, if your sound seems very quite, or non existent or the vibrate is missing or intermittent, you might have the above symptoms eventually)
If the above applies, like the original post, then this is the fix for you
If you take the 5 silver screws and the two black screws off, open the back case.
Take the silver radio interference shield off. On the bottom left you will see a black ribbon cable. if you look at the plastic cover you just took off, you will see a rectangle piece of metal shielding. You want to fold up a strip of paper into the same shape as that metal shielding. This puts pressure on the faulty ribbon cable. Put every thing back together. make sure the paper between the metal shield and the ribbon cable is thick enough that once everything is screwed in, it still works. WILL NOT WORK UNTIL ALL THE SCREWS ARE BACK IN. (Cheap test, put everything on, but leave the screws out, press on the case and see if the phone turns on, if so, try the screws, if it doesn't work then, add more paper)
