J7-Perx boot loop - Samsung Galaxy J7 Questions & Answers

Recently I tried to root my phone by installing twrp recovery onto my J7 perx (j727p). I was able to successfully install twrp, but shortly after the installation my phone got stuck in a boot loop. I've searched the internet and so far these are the methods I have tried: factory reset, wiping caches, and PIT file. I have also tried to flash the stock firmware but it fails every time. At the moment I, I am attempting to use Octopus. Also, when I charge my phone, instead of showing the battery percentage it simply displays a battery with a lightning bolt in the center.
I would love to hear and appreciate any ideas that could potentially help fix my problem.
From,
A very frustrated homosapien

Related

Can't boot into recovery - Galaxy S7 G930

Hello all.
I'm new to modifying my android (Galaxy S7 G930A) and could use some help. I have successfully rooted my phone, but have had some issues trying to flash a custom recovery. I was trying to flash TWRP but for some reason it didn't work, and I would always boot into the stock recovery.
Today, I screwed something up while trying to figure out my host of issues (I was also trying to figure out why I kept getting a "dm-verity verification failed" notice when flashing). Using the TWRP Manager app, I tried to install the recovery that way and it kept giving me an error that it was either already installed or encountered an issue of some kind. Knowing it wasn't installed, I looked for a different route. Long story short, I downloaded Flashify and then manually downloaded and flashed the TWRP recovery img and a "no-verity-opt-encrypt" file - which I read would fix the dm-verity error I was receiving.
I believe that's all I did before this recovery boot issue starting occurring.
Now, when attempting to boot into recovery (no matter what way, through an app, manually, etc) the blue text "Recovery Booting..." appears for half a second and then disappears. If I'm holding down the buttons it will flash again and disappear again, over and over. If I don't hold down the buttons, when it disappears the phone boots up as normal. So now I can't seem to access recovery at all. I wanted to try going the hard/factory reset route, but obviously can't because I can't access recovery.
Also, I don't know if this is related or not, but now my laptop will not recognize my phone at all. Doesn't give me any options - it will charge, but no connection. I was hoping to load it into Odin and do a stock reset to start from scratch before flashing a custom ROM.
Edit: I tested and connected to a different computer just fine, so there's obviously some miscommunication going on between my phone and laptop.
Can anyone help me out here? Sorry for the long post, I'm just really frustrated. :crying:

[SOLVED] Constant reboot, need urgent help!

Hey guys,
I have encountered a serious problem on my device. Today I rebooted my phone once and it has just stuck on the samsung logo. Then the phone began to reboot without ending....It could not just start. With the help of TWRP I have made a full wipe and tried to reinstall my actual firmware Superman 1.10.5, but I always stuck at 25%, the phone did not respond to any actions. I even tried to flash the stock 4-file firmware with Odin, but it did not help, the phone constantly reboots. Sometimes it manages to boot to the stage where the sign "installation of applications" appears, but a while later it stucks again and reboots. Please, help me to solve the issue, because I am begininng to think that it would be unpossible to recover the phone. I am only able to enter the download mode or recovery, anything else does not work.
Thanks....
AuroraLX said:
Hey guys,
I have encountered a serious problem on my device. Today I rebooted my phone once and it has just stuck on the samsung logo. Then the phone began to reboot without ending....It could not just start. With the help of TWRP I have made a full wipe and tried to reinstall my actual firmware Superman 1.10.5, but I always stuck at 25%, the phone did not respond to any actions. I even tried to flash the stock 4-file firmware with Odin, but it did not help, the phone constantly reboots. Sometimes it manages to boot to the stage where the sign "installation of applications" appears, but a while later it stucks again and reboots. Please, help me to solve the issue, because I am begininng to think that it would be unpossible to recover the phone. I am only able to enter the download mode or recovery, anything else does not work.
Thanks....
Click to expand...
Click to collapse
Really sad to hear that story mate. First things first, I assume your BL version is matching with the firmware your flashing right. And when you go to TWRP, can you see /system and /data partition from the mount menu? If not, you have to perform a factory reset. I had issue like that with my Galaxy S7 and usually factory reset(not wiping) helped me with that situation. Since your system can boot up, but crashes after awhile, I do suspect that some of your partition might be corrupted(at least its what happened to me). So trying factory reset can be a good bet for you.
And... I think you have to provide more information with which variant you are using, and your BL version, TWRP version too, solve the problem quicker. Hope this information helps.
CenteaOSD said:
Really sad to hear that story mate. First things first, I assume your BL version is matching with the firmware your flashing right. And when you go to TWRP, can you see /system and /data partition from the mount menu? If not, you have to perform a factory reset. I had issue like that with my Galaxy S7 and usually factory reset(not wiping) helped me with that situation. Since your system can boot up, but crashes after awhile, I do suspect that some of your partition might be corrupted(at least its what happened to me). So trying factory reset can be a good bet for you.
And... I think you have to provide more information with which variant you are using, and your BL version, TWRP version too, solve the problem quicker. Hope this information helps.
Click to expand...
Click to collapse
Yep, you are right, BL versions always matched firmwares. I tried to wipe the phone with TWRP 3.0.2.3 and also to make a factory reset with the stock recovery. The stock firmware, which I tried to flash, was G930FXXU1BPH6_G930FOXE1BPH1_SER consisting of 4 files including BL,AP,CP and CSC. After 3rd or 4th flash of the same stock firmware the phone suddenly became alive and began to boot. Wu-huuu:silly: I was happy as a child. After having successfully launched the stock rom I have again flashed TWRP 3.0.2.3, went to "wipe" option and formatted data. Then I have installed a Superman Rom 1.12 and everything went the right way. I don't understand only one thing: why after having wiped the phone several times and having reseted it through the stock as well as TWRP recovery it didn't want to boot.
As you said, I suppose that the one of partitions was corrupted. Oh damn, I thought that I won't be able to resuscitate this phone.
I have flashed about 20 phones during my life, but I have never ever encountered such serious problems.

Samsung Galaxy S6 Edge is not booting even after a factory reset

My Samsung Galaxy S6 Edge is not booting even after a factory reset
A mobile app. for Android was installed successfully and since then I’m only having issues with my Samsung mobile:
- Since the installation of both the Hockey & Mobile Banking apps, my mobile freezes during any regular action and after a few seconds the device auto-restarts itself intermittently; this happened during the weekend while in use;
- Sunday night I uninstalled both the Hockey & Mobile Banking apps and the phone continued to freeze and restart intermittently. I was able to boot in SAFE MODE.
- This morning after the phone was turned off and turned on, the phone is not loading; the boot is looping and unable to reach the menu. I’m able to boot in SAFE MODE.
- This morning I did a Factory Reset, when done I get the “welcome” screen and right thereafter, the mobile freezes, auto-restarts and the boot keep looping.
Any help would be highly appreciated.
Hey guys, any suggestions...? I tried last night restoring the OS using Samsung Smart Switch application and the process went just fine the first time and during the setup process the phone just restarted against and for stuck in bootloop again.
I did a second attempt but after the PC is don and the phone boots it gets stuck.
Sometimes after restoring stock firmware and you get a bootloop, you have to boot to stock recovery and factory reset then wipe cache partition.
I know you said you did that once before you posted, you did that before you used SmartSwitch. Have you tried factory reset since restoring with SmartSwitch?
Yes, I did with SS last night; I did it again this morning and after completing the 100% software download, it started updating the device and at 97% it stopped and got the message "FAILED".
now as we speak, I restarted it again and now it's at 66^ downloading the files.
How can I perform a clean install using SS...? or do I need ODIN...? I want to keep the mobile as original as possible.
If you can find your stock firmware, download it and flash it with Odin, it's more reliable.
Maybe a stupid question: Where can I find my stock firmware...?
My info:
PDAIX / CSCI2 / PHONE: PHH (XFA)
I found the Firmware on SAMMOBILE: https://www.sammobile.com/firmwares/galaxy-s6-edge/SM-G925F/XFA/download/G925FXXU4DPIX/108273/
Is this a stock Firmware and reliable source...?
Sammobile is a very reliable source, if that firmware is the newest one for your model number and country/region/carrier then you're good to go.
I did install Firmware corresponding to my phone (PDAIX / CSCI2 / PHONE: PHH (XFA)) using Odin, I can use the phone for like 2 or 3 minutes and then it freezes, restarts and gets into boot loop.
Any more drastic measurements to take...? Is there an online tool to test the hardware function(s)...?
After flashing stock firmware, have you tried booting to stock recovery then do the factory reset and wipe cache then reboot.
Yes, I did...!
In ODIN, do I load only the "AP"...?
In most situations, AP is all you need if the firmware is an all in one firmware file, if you have a 4 part firmware then you need to put each part in its corresponding tab/slot in Odin.
Sometimes you have to flash more than once to be successful.
My phone is running like a horse now...! No more intermittent restarts nor boot looping.
I just did a clean install of Android 7.
The clean install of Android 7 went fine and now it's working back again, was because I changed the "Reactivation Lock" to OFF; I think this helped.

Wokeup to my phone stuck in a bootloop... [SOLVED]

UPDATE: I have finally managed to get my phone working again! Am now currently re-downloading all my apps and transferring all my files back to my phone, running AOSPExtended (https://forum.xda-developers.com/oneplus-one/development/rom-aospextended-rom-t3732194) with OpenGApps. I'll write the steps I took to figure this mess out at the end of this post for anyone who might encounter the same problem in the future. :good:
So last night I left my phone charging overnight from 54% as I was downloading a couple of files (my internet is 1Mbps or 125KB/s). I've done this a couple of times before with no problems what so ever. But this morning I woke up and my phone was in a boot loop. I've tried everything I can think of and everything I could find on these forums, but to no luck. I am at my wits end and I have no clue what to do except to do a full factory reset, which I'd rather not do as its been a while since my last backup and I would lose a lot of precious files...
My Phone: OnePlus One 64GB Sandstone Black, purchased in August 2014.
ROM: cm-13.0-ZNH5Y-20161105-STABLE-Sultan-bacon
Recovery: TWRP+3.0.3-2-TugaPower
Firmware: bacon_firmware_update_2016_1-25_.4.0.1.c7-00011
The boot loop itself is odd, I'll describe them separately here.
-I can boot into fastboot, but not while the USB is plugged into my PC. I have to boot into fastboot, followed by plugging it into my PC. If I try to boot into fastboot while it is plugged in, the screen goes completely black and goes back into the bootloop. However, the phone shows up in Device Manager during the black screen.
- I can boot into Recovery, but the phone automatically reboots and goes back into the bootloop after a few minutes. One thing I have noticed is that if I let it reboot by itself, all the settings reset (including the confirmation to allow modifying of files when you first boot into recovery). But if I manually reboot back into recovery, the settings remain the same; atleast until it reboots automatically again.
Here, I'll list the things that I have tried to no avail:
1. Following this post - https://www.reddit.com/r/oneplus/comments/3izejg/so_youve_just_bricked_your_oneplus/, when I try to wipe Dalvik cache and cache from recovery, the phone goes right back into the bootloop
2. I tried flashing a newer version of TWRP (3.2.1-0 and 3.2.1-K2). After flashing I try to boot into recovery but the TWRP loading screen displays, and then goes right back into the bootloop. It wont even let me into the main menu.
3. I tried flashing a ROM through fastboot (via this post, https://forums.oneplus.net/threads/guide-oneplus-one-flashing-fastboot-recovery.301131/). The phone still remains in a bootloop.
HOWEVER, if I flash my previous recovery (TWRP+3.0.3-2-TugaPower replacing the stock cyanogen recovery from this method), my phone manages to get past the 1+ screen, and goes through my custom power on screen, and reaches the "Android is starting... Optimizing app 1 of 67." But it never gets past app 1, freezes, and then reboots. So now it's stuck in this "extended" bootloop thing.
What I want to know: is there anyway to fix my phone, or will I have to lose all my data and do a full factory reset through the ColorOS method? If anyone has any experience with this or knows a way to help, please don't hesitate!
Thank you in advance.
WHAT WORKED FOR ME:
After following the steps in this post (https://forums.oneplus.net/threads/guide-oneplus-one-flashing-fastboot-recovery.301131/) my phone was booting up, but was kicked back into a boot loop after freezing at the "Android is starting.. Optimizing app 1 of 67" screen. However, the recovery was now the default CyanogenMod recovery. I then re-flashed my previous recovery (TWRP+3.0.3-2-TugaPower) from fast boot, and it was now stable (no more auto-reboots). From there I made a backup off all my files onto my PC before proceeding. After that, I did what this post said (https://www.reddit.com/r/oneplus/comments/3izejg/so_youve_just_bricked_your_oneplus/) and wiped Cache + Dalvik cache. This allowed me to boot all the way past the "Android is starting" screen. However, the phone was still rendered unusable as there were non-stop notifications saying various apps had stopped working. I then booted back into recovery, downloaded and pushed a new ROM and GApps package on to my phone, wiped system, data, cache, dalvik cache, and installed the ROM and GApps pacakge, clearing the cache one more time before rebooting. Everything is working beautifully so far and I could not be happier! I hope this helps anyone else who encounters this problem, Cheers!

Galaxy S7 G930U Unlocked stuck in boot loop - already flashed successfully but no fix

I'm really hoping you guys can help me out here. This is an S7 I bought from a Best Buy when I visited the US in 2017, and I got the Unlocked version so I would be able to use it back in my home country. Unfortunately, this is the second time I've had trouble with it in a span of 4 months and the first time it was a hardware problem and ended up quite expensive to get fixed.
Today I was using my phone normally when I decided to use the Google instant translation to translate something on my computer screen. That caused my phone to freeze, restart, and then tell me I was using an unauthorized flash and it was going to be locked, or something like that. Even after restarting a few more times, the phone would never get past that screen. I proceeded to factory reset/cache reset and from then on the phone just got stuck in a boot loop.
I learned that the fix would be to flash the phone. After a lot of work I found the G930UUESACSI1-20190930144640 firmware (the XAA version, for Unlocked) and successfully used Odin 3.13 at the Download Mode screen to flash my phone. It then restarted, went back to the blue screen, started installing some updates, when it was 100% it restarted again. Unfortunately, the loop remained. Galaxy S7 logo first, then the Samsung logo, then it just repeats.
I have also tried turning the phone off with the Recovery screen shut down option (since I can't seem to be able to turn it off with the power button right now), wait a few minutes, then turn it back on. Nothing changed.
Please, does anyone have any insight into this? What else could I possibly try, or what could I be doing wrong? I really don't want to send it to repair yet again in such a short time.
Many thanks in advance.
gabeblack said:
I'm really hoping you guys can help me out here. This is an S7 I bought from a Best Buy when I visited the US in 2017, and I got the Unlocked version so I would be able to use it back in my home country. Unfortunately, this is the second time I've had trouble with it in a span of 4 months and the first time it was a hardware problem and ended up quite expensive to get fixed.
Today I was using my phone normally when I decided to use the Google instant translation to translate something on my computer screen. That caused my phone to freeze, restart, and then tell me I was using an unauthorized flash and it was going to be locked, or something like that. Even after restarting a few more times, the phone would never get past that screen. I proceeded to factory reset/cache reset and from then on the phone just got stuck in a boot loop.
I learned that the fix would be to flash the phone. After a lot of work I found the G930UUESACSI1-20190930144640 firmware (the XAA version, for Unlocked) and successfully used Odin 3.13 at the Download Mode screen to flash my phone. It then restarted, went back to the blue screen, started installing some updates, when it was 100% it restarted again. Unfortunately, the loop remained. Galaxy S7 logo first, then the Samsung logo, then it just repeats.
I have also tried turning the phone off with the Recovery screen shut down option (since I can't seem to be able to turn it off with the power button right now), wait a few minutes, then turn it back on. Nothing changed.
Please, does anyone have any insight into this? What else could I possibly try, or what could I be doing wrong? I really don't want to send it to repair yet again in such a short time.
Many thanks in advance.
Click to expand...
Click to collapse
You need to clear the cache after flashing to get out of the boot loop.
Use the download key combo to restart. As soon as the screen goes black move to Volume up+home+power.
In the recovery menu choose clear/ Wipe cache, then choose reboot.
I apologize for not updating this thread before when it was still recent. The fact is that I didn't manage to fix my phone; clearing the cache after flashing did nothing to stop the loop.
I ended up taking the phone to the people who have fixed it in the past and after more than one month, they gave up. So I got my phone back and I want to try to give it another go before I just sell it for parts.
Unfortunately, my phone has come back even worse. Now it has no Recovery Menu to speak of, at least none that I can access; after a few seconds of the blue text on the top saying that it's entering recovery mode, it then proceeds to a blue screen saying: "Security Error: This phone has been flashed with unauthorized software and is locked.". I can still access Download Mode.
I have attempted flashing a few firmwares that I believe should have worked with my SM-G930U. Odin listed the attempts as "pass" and, after restarting and going back to the Download screen, it says the binary is Official. However, after trying to restart the phone normally, it starts displaying the blue screen again, and then, after going to Download mode, the binary is reverted to "Custom".
I believe right now the order of the day is to get the recovery menu to work again so I can do all the cache cleaning that seems to be required after flashing firmware. Any ideas at all on how I should proceed? Is there something specific I should download to fix the recovery menu?
How many files are you flashing in Odin, is it just 1 file in the AP slot, or 4 files: AP, BL, etc.? Also, is your phone rooted?
Drunkpilot said:
How many files are you flashing in Odin, is it just 1 file in the AP slot, or 4 files: AP, BL, etc.? Also, is your phone rooted?
Click to expand...
Click to collapse
Never rooted, was using the phone legit before it froze and entered boot loop. I flashed all 4 files, multiple times.
Someone tried fixing my phone a few days after I replied to this thread and some progress seems to have been made, but now the phone cannot get past a black screen with a "SBL Error! rdx_init!" in red text, and "upload mode" in yellow text. Still cannot access Recovery Mode, but Download Mode still works.
I did a little Googling on rdx_init errors and it seems I need a firmware dump from another G930U or something like that...any ideas on how I can proceed?
Flash it with Eng Boot in all slots using patched Odin. Reboot to recovery and wipe it. Reboot system. Then root it with advanced adb root. Links for all of this are here in xda. Enjoy
STA1NL3SS said:
Flash it with Eng Boot in all slots using patched Odin. Reboot to recovery and wipe it. Reboot system. Then root it with advanced adb root. Links for all of this are here in xda. Enjoy
Click to expand...
Click to collapse
Sorry, I'm not an expert at this by any means, I'm not sure what files to get. So far I've found and downloaded the following:
S7_Oreo_Nougat_Adb_Advanced_Root_V10
S7_Oreo_Nougat_Adb_Advanced_Root_V12
S7_Oreo_Su_Binary_Only_ADB_Root
But I had no luck flashing any of these cause my binary is 10. Is there any more help you can provide me? I really don't know how to proceed
gabeblack said:
Sorry, I'm not an expert at this by any means, I'm not sure what files to get. So far I've found and downloaded the following:
S7_Oreo_Nougat_Adb_Advanced_Root_V10
S7_Oreo_Nougat_Adb_Advanced_Root_V12
S7_Oreo_Su_Binary_Only_ADB_Root
But I had no luck flashing any of these cause my binary is 10. Is there any more help you can provide me? I really don't know how to proceed
Click to expand...
Click to collapse
I thought I had one in my phone, but I don't. If you look at the thread where you downloaded the Root_V12, you will see it. It's near the end of the thread somewhere.

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