I had installed 'blackhawks next kernel' for dual-booting.
I had CM11 on partition 1 and Stock Samsung on Partition 2.
I decided I want to simply revert to a single partition with the stock Samsung.
I booted into partition 1.
I used Phils to install 'GT3_MH2_STOCK_Kernel_SM-t310_Tab3.zip'
When the machine rebooted, it jumped into the Cyanogen Mod boot sequence, and just loops.
If I try to turn the machine off to boot into recovery, the Tab doesn't shut down - it just reboots.
Trying to 'time' getting into recovery hasn't netted me much luck with about 20 tries of nailing the 10-second 'hold power button then nail volume up.'
Any suggestions?
Well, I got further.
I found that if I plugged the USB cable into the device into my computer, then pressed and held the power, when it would 'auto-reboot' to the battery icon screen.
Once at the battery icon screen, I unplugged the USB cable and the tablet completely turned off.
From there, I was able to get back to Philz.
So, I guess my new question is: How do I correctly install any kernel other than blackhawks, which would allow me to flash back to a stock ROM?
curiousmike said:
I had installed 'blackhawks next kernel' for dual-booting.
I had CM11 on partition 1 and Stock Samsung on Partition 2.
I decided I want to simply revert to a single partition with the stock Samsung.
I booted into partition 1.
I used Phils to install 'GT3_MH2_STOCK_Kernel_SM-t310_Tab3.zip'
When the machine rebooted, it jumped into the Cyanogen Mod boot sequence, and just loops.
If I try to turn the machine off to boot into recovery, the Tab doesn't shut down - it just reboots.
Trying to 'time' getting into recovery hasn't netted me much luck with about 20 tries of nailing the 10-second 'hold power button then nail volume up.'
Any suggestions?
Click to expand...
Click to collapse
Do a clean install of stock ROM by going into download mode. Power + Volume down + Home button.
curiousmike said:
Well, I got further.
I found that if I plugged the USB cable into the device into my computer, then pressed and held the power, when it would 'auto-reboot' to the battery icon screen.
Once at the battery icon screen, I unplugged the USB cable and the tablet completely turned off.
From there, I was able to get back to Philz.
So, I guess my new question is: How do I correctly install any kernel other than blackhawks, which would allow me to flash back to a stock ROM?
Click to expand...
Click to collapse
The kernel you installed will only work with stock roms. You still had CM installed as primary rom and attempted to use a stock kernel with it. That's why it wouldn't boot.
You have a couple options now for reverting to stock.
1. Odin - Download and flash a full stock firmware; then boot into recovery and do a factory reset. There are many guides for doing this with Odin. Firmware is available at sammobile.com.
2. Recovery - Download a stock-based rom and flash it in recovery. Make sure you do a full wipe in recovery before flashing. The rom will have a kernel also, so there is no need to flash another one.
Hi folks,
I had my G920P on PB6 base, with TWRP from here; http://forum.xda-developers.com/spr...nt/tool-utility-twrp-3-0-0-1-teamwin-t3335260, and installed TeamSPR 3.6 ROM (http://forum.xda-developers.com/sprint-galaxy-s6/development/teamspr-rom-v3-t3380648). All was running dandy.
Then one day, I flashed @tdhite 's SkyHigh kernel (v3.2, can be grabbed here; http://forum.xda-developers.com/sprint-galaxy-s6/development/kernel-skyhigh-mm-6-0-1-kernel-t3350673). All was smooth.
Then I wanted to revert back to the default kernel that shipped with TeamSPR ROM, so extracted the boot.img from the ROM zip, and used Flashify (got latest from the Play Store) to flash it. This is where things went downhill.
Upon rebooting, and entering recovery, nothing happened. I don't recall what happened at this point (whether I rebooted, or went to flash SkyHigh zip again, because I was panicking?), but upon attempting to reboot, I entered this bootloop from hell, in which the ROM would not get past the "samsung" screen (I am assuming the equivalent of the Sprint LTE screen, since the TeamSPR ROM replaces that with the international screen :good.
In desperation, I booted into recovery, made a nandroid backup, and took out everything I wanted out of the device.
Then, I went here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/
got the latest (PF4) TAR (yes, MD5 checked out), wiped the phone from TWRP (system/data/cache/internal storage), and ODIN-ed that.
According to ODIN, all went without a hitch.
When the phone rebooted, it went into stock recovery, and it displayed a "applying update" message, followed by "erasing...", and then "applying update". And then, abruptly rebooted itself.
Bootup now went to the Sprint logo, and then "optimizing apps" green/teal screen (it optimizes 32 apps, for whatever it's worth). Almost instantly after the 32nd app is "optimized", the phone reboots again, and this bootloop restarts.
If I broke the loop by going to recovery (still stock recovery at this point), I am greeted again with with "applying update" message, but then I get the dreadful android with an exclamation point sign on top, undoubtedly having failed to apply whatever updated it was trying to do.
Pressing the power button at this stage, gets me to the stock recovery.
Here, I wiped cache, and did a factory reset. Both yielded no different behavior upon reboot from what has been outlined post-ODIN flash.
(I have tried versions 3.10.6 and 3.11.1 of ODIN, by the way - same result).
I got the latest TWRP available (link posted here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/), wiped system/cache/data/internal storage, and installed TeamSPR ROM (but not their 3.6 OTA). Rebooted the device, but the device goes into bootloop again on the flashing "Samsung" screen, so back to square 1.
At this point, I am not sure what else to try. The phone is a paperweight at this point, and I am really hoping for it not to remain as such.
Ideas?
Thanks in advance!
nostrings said:
Hi folks,
I had my G920P on PB6 base, with TWRP from here; http://forum.xda-developers.com/spr...nt/tool-utility-twrp-3-0-0-1-teamwin-t3335260, and installed TeamSPR 3.6 ROM (http://forum.xda-developers.com/sprint-galaxy-s6/development/teamspr-rom-v3-t3380648). All was running dandy.
Then one day, I flashed @tdhite 's SkyHigh kernel (v3.2, can be grabbed here; http://forum.xda-developers.com/sprint-galaxy-s6/development/kernel-skyhigh-mm-6-0-1-kernel-t3350673). All was smooth.
Then I wanted to revert back to the default kernel that shipped with TeamSPR ROM, so extracted the boot.img from the ROM zip, and used Flashify (got latest from the Play Store) to flash it. This is where things went downhill.
Upon rebooting, and entering recovery, nothing happened. I don't recall what happened at this point (whether I rebooted, or went to flash SkyHigh zip again, because I was panicking?), but upon attempting to reboot, I entered this bootloop from hell, in which the ROM would not get past the "samsung" screen (I am assuming the equivalent of the Sprint LTE screen, since the TeamSPR ROM replaces that with the international screen :good.
In desperation, I booted into recovery, made a nandroid backup, and took out everything I wanted out of the device.
Then, I went here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/
got the latest (PF4) TAR (yes, MD5 checked out), wiped the phone from TWRP (system/data/cache/internal storage), and ODIN-ed that.
According to ODIN, all went without a hitch.
When the phone rebooted, it went into stock recovery, and it displayed a "applying update" message, followed by "erasing...", and then "applying update". And then, abruptly rebooted itself.
Bootup now went to the Sprint logo, and then "optimizing apps" green/teal screen (it optimizes 32 apps, for whatever it's worth). Almost instantly after the 32nd app is "optimized", the phone reboots again, and this bootloop restarts.
If I broke the loop by going to recovery (still stock recovery at this point), I am greeted again with with "applying update" message, but then I get the dreadful android with an exclamation point sign on top, undoubtedly having failed to apply whatever updated it was trying to do.
Pressing the power button at this stage, gets me to the stock recovery.
Here, I wiped cache, and did a factory reset. Both yielded no different behavior upon reboot from what has been outlined post-ODIN flash.
(I have tried versions 3.10.6 and 3.11.1 of ODIN, by the way - same result).
I got the latest TWRP available (link posted here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/), wiped system/cache/data/internal storage, and installed TeamSPR ROM (but not their 3.6 OTA). Rebooted the device, but the device goes into bootloop again on the flashing "Samsung" screen, so back to square 1.
At this point, I am not sure what else to try. The phone is a paperweight at this point, and I am really hoping for it not to remain as such.
Ideas?
Thanks in advance!
Click to expand...
Click to collapse
Everything you have said is normal. EXCEPT rebooting after optimizing apps.
What I suggest, is power down phone COMPLETELY via TWRP. Boot phone to download mode. Flash PF4 TAR.
Let it do its thing, including rebooting to recovery to apply the update. But pay close attention!! After it shuts down to reboot to Android, interrupt it and go straight to recovery. Then WIPE data/factory reset from stock recovery.
Then reboot to Android.
nostrings said:
Hi folks,
I had my G920P on PB6 base, with TWRP from here; http://forum.xda-developers.com/spr...nt/tool-utility-twrp-3-0-0-1-teamwin-t3335260, and installed TeamSPR 3.6 ROM (http://forum.xda-developers.com/sprint-galaxy-s6/development/teamspr-rom-v3-t3380648). All was running dandy.
Then one day, I flashed @tdhite 's SkyHigh kernel (v3.2, can be grabbed here; http://forum.xda-developers.com/sprint-galaxy-s6/development/kernel-skyhigh-mm-6-0-1-kernel-t3350673). All was smooth.
Then I wanted to revert back to the default kernel that shipped with TeamSPR ROM, so extracted the boot.img from the ROM zip, and used Flashify (got latest from the Play Store) to flash it. This is where things went downhill.
Upon rebooting, and entering recovery, nothing happened. I don't recall what happened at this point (whether I rebooted, or went to flash SkyHigh zip again, because I was panicking?), but upon attempting to reboot, I entered this bootloop from hell, in which the ROM would not get past the "samsung" screen (I am assuming the equivalent of the Sprint LTE screen, since the TeamSPR ROM replaces that with the international screen :good.
In desperation, I booted into recovery, made a nandroid backup, and took out everything I wanted out of the device.
Then, I went here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/
got the latest (PF4) TAR (yes, MD5 checked out), wiped the phone from TWRP (system/data/cache/internal storage), and ODIN-ed that.
According to ODIN, all went without a hitch.
When the phone rebooted, it went into stock recovery, and it displayed a "applying update" message, followed by "erasing...", and then "applying update". And then, abruptly rebooted itself.
Bootup now went to the Sprint logo, and then "optimizing apps" green/teal screen (it optimizes 32 apps, for whatever it's worth). Almost instantly after the 32nd app is "optimized", the phone reboots again, and this bootloop restarts.
If I broke the loop by going to recovery (still stock recovery at this point), I am greeted again with with "applying update" message, but then I get the dreadful android with an exclamation point sign on top, undoubtedly having failed to apply whatever updated it was trying to do.
Pressing the power button at this stage, gets me to the stock recovery.
Here, I wiped cache, and did a factory reset. Both yielded no different behavior upon reboot from what has been outlined post-ODIN flash.
(I have tried versions 3.10.6 and 3.11.1 of ODIN, by the way - same result).
I got the latest TWRP available (link posted here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/), wiped system/cache/data/internal storage, and installed TeamSPR ROM (but not their 3.6 OTA). Rebooted the device, but the device goes into bootloop again on the flashing "Samsung" screen, so back to square 1.
At this point, I am not sure what else to try. The phone is a paperweight at this point, and I am really hoping for it not to remain as such.
Ideas?
Thanks in advance!
Click to expand...
Click to collapse
You have to let it die completely, and when it does die boot into download mode continuously until it wonr anymore (completely dead), and charge until 15% (incase u have to try again). Should b fixed
nostrings said:
Hi folks,
. . .
so extracted the boot.img from the ROM zip, and used Flashify (got latest from the Play Store) to flash it. This is where things went downhill.
. . .
Click to expand...
Click to collapse
The post above (assuming this gets there in time) about killing the battery and restarting is correct (generally).
But what you did was not correct (in the quote). You cannot simply pull a boot image, restore that and presume that's enough. The reason is at boot, before selinux is turned down to permissive (init.d processing usually), your file contexts will likely not be correct. There are many commands in the flash updater-script handlers that fixup the permissions to match the ramdisk used. Additionally, there will probably exist inconsistent init.d handling, or otherwise none at all (i.e., with a stock boot.img).
My Skyhigh kernels generally fixes up the permissions in updater-script, even for ROMs that did not set up their initial files contexts correctly, so things will be smooth as you note. Going back to an improperly formed kernel flash, or just pulling the boot image and forcing it into place is not a good idea in general. Flash the full kernel flash next time so it can do its work. Or ask for help first -- we can get you settled.
Let ur s6 die meaning go to odin mode let it sit for hours until it auto shuts off ..while off plug in cable charge to about 10% plug off cable go into recovery first wipe data and cache n restart ...and wallah ur phone is fixed ...hit like it will help...100% this will work on ur phone
nostrings said:
Hi folks,
I had my G920P on PB6 base, with TWRP from here; http://forum.xda-developers.com/spr...nt/tool-utility-twrp-3-0-0-1-teamwin-t3335260, and installed TeamSPR 3.6 ROM (http://forum.xda-developers.com/sprint-galaxy-s6/development/teamspr-rom-v3-t3380648). All was running dandy.
Then one day, I flashed @tdhite 's SkyHigh kernel (v3.2, can be grabbed here; http://forum.xda-developers.com/sprint-galaxy-s6/development/kernel-skyhigh-mm-6-0-1-kernel-t3350673). All was smooth.
Then I wanted to revert back to the default kernel that shipped with TeamSPR ROM, so extracted the boot.img from the ROM zip, and used Flashify (got latest from the Play Store) to flash it. This is where things went downhill.
Upon rebooting, and entering recovery, nothing happened. I don't recall what happened at this point (whether I rebooted, or went to flash SkyHigh zip again, because I was panicking?), but upon attempting to reboot, I entered this bootloop from hell, in which the ROM would not get past the "samsung" screen (I am assuming the equivalent of the Sprint LTE screen, since the TeamSPR ROM replaces that with the international screen :good.
In desperation, I booted into recovery, made a nandroid backup, and took out everything I wanted out of the device.
Then, I went here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/
got the latest (PF4) TAR (yes, MD5 checked out), wiped the phone from TWRP (system/data/cache/internal storage), and ODIN-ed that.
According to ODIN, all went without a hitch.
When the phone rebooted, it went into stock recovery, and it displayed a "applying update" message, followed by "erasing...", and then "applying update". And then, abruptly rebooted itself.
Bootup now went to the Sprint logo, and then "optimizing apps" green/teal screen (it optimizes 32 apps, for whatever it's worth). Almost instantly after the 32nd app is "optimized", the phone reboots again, and this bootloop restarts.
If I broke the loop by going to recovery (still stock recovery at this point), I am greeted again with with "applying update" message, but then I get the dreadful android with an exclamation point sign on top, undoubtedly having failed to apply whatever updated it was trying to do.
Pressing the power button at this stage, gets me to the stock recovery.
Here, I wiped cache, and did a factory reset. Both yielded no different behavior upon reboot from what has been outlined post-ODIN flash.
(I have tried versions 3.10.6 and 3.11.1 of ODIN, by the way - same result).
I got the latest TWRP available (link posted here; http://forum.xda-developers.com/spr...ide-links-files-update-root-restore-t3366862/), wiped system/cache/data/internal storage, and installed TeamSPR ROM (but not their 3.6 OTA). Rebooted the device, but the device goes into bootloop again on the flashing "Samsung" screen, so back to square 1.
At this point, I am not sure what else to try. The phone is a paperweight at this point, and I am really hoping for it not to remain as such.
Ideas?
Thanks in advance!
Click to expand...
Click to collapse
Hey bud thats that constant rebooting issue yes it reboots about ten times before it can optimize those apps then if u do get to start up itll still reboot every min right. well let it die completly man die so much it wont turn on at all then plug it in aand turn it on bingo
I'm not sure if anyone mentioned this but there is a Soft Power-Off(basically the same effect as pulling out your battery) on a Samsung Galaxy S6. All you need to do is Hold volume down and the power button.
tdhite said:
The post above (assuming this gets there in time) about killing the battery and restarting is correct (generally).
But what you did was not correct (in the quote). You cannot simply pull a boot image, restore that and presume that's enough. The reason is at boot, before selinux is turned down to permissive (init.d processing usually), your file contexts will likely not be correct. There are many commands in the flash updater-script handlers that fixup the permissions to match the ramdisk used. Additionally, there will probably exist inconsistent init.d handling, or otherwise none at all (i.e., with a stock boot.img).
My Skyhigh kernels generally fixes up the permissions in updater-script, even for ROMs that did not set up their initial files contexts correctly, so things will be smooth as you note. Going back to an improperly formed kernel flash, or just pulling the boot image and forcing it into place is not a good idea in general. Flash the full kernel flash next time so it can do its work. Or ask for help first -- we can get you settled.
Click to expand...
Click to collapse
The letting it die has done it. I am still not sure why it worked, but I am really glad it did. Thank you!!!
RE: writing boot.img into BOOT partition manually. Yeah, not the best idea to go about it (to put it nicely ). My line of thinking was, any file contexts would have been set by the init.d scripts that run as a result of your kernel having been previously flashed. Clearly, I paid for this assumption with an entire day of panic. There's so much I still have to learn about kernel development, and especially for our devices.
Trpling said:
I'm not sure if anyone mentioned this but there is a Soft Power-Off(basically the same effect as pulling out your battery) on a Samsung Galaxy S6. All you need to do is Hold volume down and the power button.
Click to expand...
Click to collapse
I did do that multiple times, to no avail.