Upgrade or Downgrade Baseband 8 - AT&T Samsung Galaxy S7 Edge Guides, News, & Discus

Hello experts,
Since Oreo was pushed to my S7 Edge through OTA, it has been nothing but trouble. My phone is extremely sluggish and unresponsive, to the point that when I get a call, the phone rings but doesn't come on so I cant answer the phone. I have wiped out cache multiple times and even factory reset it couple of times and the phone is still very slow. I have been reading here trying to find a solution, but have not been very successful.
The Baseband Version on my phone is "G935AUCS8CRK1". From reading all the threads here, it looks like I am on BB8 and stuck and wont be able to upgrade or downgrade. But still I thought I post the question here and one of you experts can confirm and/or suggest a solution for the problem I am experiencing.
If it is not possible to flash any rom once on BB8, is there anything I can do to improve the performance of my S7 edge after Oreo upgrade? As mentioned above, I have wiped and cache and done a factory reset multiple times with no luck. Am I the only one experiencing the lag/sluggishness?
Thanks in advance for your suggestions and support!

I have had occasional slowdowns on Oreo, but nothing like what you are describing. There is a bit of lag when an incoming call comes in that wasn't there before, and I often see a purple screen for a second before it pulls up the contact info, but it is ringing as this happens. I have never had an issue answering a call, etc. I am CRK2, though, not CRK1. Overall, the lack of keyboard lag, which made me despise Nougat on this phone, makes up for the occasional lag elsewhere.
Unfortunately, you can't downgrade the bootloader/baseband, so you can only run software builds that are based on that version - all of which, I believe, are Oreo builds now.

Mine is running very well, very improved. The only problem that I have is the battery drain, I can hardly reach 4 hours of screen on time on battery, but the normal average is 3, 3.5 hours of screen on time. So sad that actually is not a way to downgrade to B8

Related

[Q] to lolipop rom users

Hello guys,
I've been testing all lolipop roms that had listed everything as working. Such as crDroid, CandyRom, SlimLP. On every of those lolipop roms pretty much most of the important stuff worked. There were stuff like equalizer not working or too dim notification LED, but from time to time I got touchscreen freezes. I mean I could use phone for a couple hours and then the touchscreen would freeze really often, sometimes it froze for couple of seconds and that was it and sometimes it could last for 10 minutes. This is really annoying and unacceptable if developer says that the touchscreen works.
I ended up contacting crDroid developer - davidteri81 and he said that the touchscreen works fine for him. I asked in the thread and I got only a single response saying he doesn't have this issue, but the sensivity is too high.
I've tried like literally 4 lolipop roms on my Z1 and each one of them had those touchscreen freezes. I even ended up flashing liquidsmooth in which I didn't had this issue, or it just didnt had the chance to happen since most stuff doesn't work there and it isn't usable as a daily driver so I quickly got rid of it.
My question here is:
Do you get touchscreen freezes? Please reply only after minimum 24h of usage. If you don't have any touchscreen freezes on lolipop rom on the Z1 then please, tell me what Lolipop rom do you use as I couldn't find any that wouldn't have a buggy touchscreen.
Please tell me if it works for you without issues or do you also have this issue on the Z1 as I'm puzzled because it couldn't be just me since I did a full phone wipe, flashed the phone clean, even wiping internal memory, but it still happens and I cant find a way to use any Lolipop rom everyday on my Z1. The more replies I get, the better.
@olokos: I'm on CM12 official and use it now for many days. In this time I never faced any touch freezes on my Z1.
I've got some other "bugs" that confused me a bit and make some manual fixes like Wi-Fi MAC. But for me I can say that this ROM is really stable and I use it as my daily driver.
schickel said:
@olokos: I'm on CM12 official and use it now for many days. In this time I never faced any touch freezes on my Z1.
I've got some other "bugs" that confused me a bit and make some manual fixes like Wi-Fi MAC. But for me I can say that this ROM is really stable and I use it as my daily driver.
Click to expand...
Click to collapse
Same for me, although, the touch screen did freeze once, but I locked it and unlocked it and it worked again. It's probably hardware since I got my Z1 replaced because of this issue that even happened on stock ROM occasionally.
using CandyRom 5.0.2
I never faced any touch freezes issue
@olokos: I'm on 20150214 and now I've got touchscreen freezes. This is the first time for me on Z1.
But I think that this could be a global Cm12 issue, because my Nexus 7 also get some freezes and I thought that something is wrong with my fingers or tempered glass.
The problem is how to debug this?
im on candy 5 and my screen dont freeze, but my screen percieves touches from nowhere... but only if i have earphone plugged in .. thats more than just annoying
anyone has the same prob?
sry for my really bad english
Touchscreen freezing issue definitely isn't hardware issue on custom roms. I haven't tried CM12 or any other apart from those listed on XDA, but I will propably build some lolipop rom from source by myself if I get enough reports that will be useful for me. If touchscreen works for you then please, tell me what rom you are using and for how long you use it, what't the way you flashed it.
I only need those 3 things. If touchscreen doesn't work just for me then I'll build my own stock based rom based on Sony sources. I just have to make sure that the touchscreen issue isn't just on my side.
All I need is:
Do you have touchscreen issues? Yes/no
What ROM/Kernel you are using? CandyRom 5.0
For how long? 5 weeks
Answer those 3 questions, legitimately and I'll consider that. I'm not sure If I'll have enough time to work on this, so please, be honest with your answers because I'm not going to fix the touchscreen, or maybe I will if it doesn't happen for everyone.
I experience dramatic touch screen freezes as well since the first time I installed Lollipop nightlies. (4 weeks now). Tried clearing cache, factory restores, de- and reinstalling apps. Reflash kernel, format SD, reinstalling gapps, puzzeling at logcat logs etc. Nothing helps. Random freezes from seconds till minutes. Only thing that 90% of the time will help is keep pressing powerbutton until screen becomes responsive. It happens more when I have a lot of (hangout or whatsapp) notifications, or when trying to type something (stock keyboard). Tried other keyboards: no luck. Tried every toggle: WiFi , Bluetooth etc. : no luck.
I experience dozens of freezes a day. Almost to the point that cm12 is completely unusable. Love this ROM, but this is a real showstopper.
1. No
2. AOSP Vanir 5.02
3. Since first availibility (12/14)
I experienced this issue on 2 roms in 2 forms
1. No (coming from Stock 14.4.A.0.108)
2. KitSlim_AMG [Evo 8.1] / iHackers advanced Stock Kernel
3. Since installing the Rom
This was the first time i experienced touch-issues. Not a freeze of the screen, but the screen sometimes started registering touch-events on the wrong places. This was temporarly fixed by locking/unlocking the display.
1. Yes (coming from KitSlim_AMG [Evo 8.1] )
2. crDroid-5.0.2-20150303-honami / 3.4.0-crDroid (packaged with rom)
3. Since installing the Rom a day ago
This time i get freezes. And they are much more frequent than those "ghost-inputs" from KitSlim_AMG. Unlocking the device also fixes it temporarly.

Can't get rid of massive lag

I'm really new at this and it looks like nobody care about each other. When someone asks for help most of times gets no answer at all... at least with me. I've asked for help in a lot of sites but nobody replied me. So my last hope is here.
I tried everything to solve my Moto G 2014 lag issue. Changed ROM, Kernel, Kernel APP (Synapse,Kernel Adiutor, Device Manager etc) , flashed the MK_PFRMCe v3.0 , I even FACTORY RESETED. My RAM looks fine even with a lot of apps open (usually I have 150MB left) so the problem is the massive lag from nowhere! When I open the sms or whatsapp everything starts to freeze! I've downloaded Watchdog Task Manager in order to find any problematic apps but still... nothing was found.
I've tried to search good performance tweaks of kernels but I couldn't find a recent one. So I tried to search here but i couldn't find any guide ANYONE HELP ME PLS!!?
Not really much to go on, but it could be a sign of a falling eMMC.
Sent from my XT1031
Im in the same boat here. Had original 4.5" Moto G & loved it for a couple of years. Upgraded to the 2014 (XT1072) model for the bigger screen & have had nothing but trouble with it.
Upgraded in April, was OK for around a month but then huge lag problems started. SMS app takes forever to open, Chrome is very vey slow to do anything. I get phone calls & miss the call due to the inordinate amount of time it takes for the screen to illuminate. When I make an outgoing call, I hear at least three or four "rings" before I get the visual "calling" thing on the screen.
I;ve tried clearing cache which makes a slight difference for a week or so but then it goes back to being unusable. I;ve also tried factory reset which sorts it out for a few weeks.
Very disappointed with this MotoG. So much so I'm considering switching to an iPhone 6 on a monthy contract.

Galaxy Tab S 8.4 wifi lollipop upgrade is rubbish

After a lot of issues i just ended up downgrading back to kitkat on my galaxyTab S8.4 wifi, from lollipop.
Issues i was experiencing were:
-totally unreliable battery meter & performance. - Could read 100%, and 10 mins later would read 5% and turn off.
-screen flicker - lines would flicker across the screen randomly, usually before the device crashed.
-Rebooting - the device would randomly reboot, but usually happened 3-4 times per hour, making the device useless.
-screen freeze - the touchscreen would stop working randomly, usually before it rebooted itself.
Ive just gone back to kitkat (voided my warranty in the process) and its still to be seen if downgrading resolves the battery issue, but already the screen flicker seems to be gone. Il update after a day or two use.
Very annoyed with Samsung for releasing an unusable update that rendered the tablet useless & the solution was to load a rom myself, voiding the warranty.
Have experienced absolutely none of the issues you refer to on my SM-T805.
Runs just fine for me.
Downgrading to KITKAT doesn't void your warranty.
ashyx said:
Have experienced absolutely none of the issues you refer to on my SM-T805.
Runs just fine for me.
Downgrading to KITKAT doesn't void your warranty.
Click to expand...
Click to collapse
I agree with ashyx , my tab s runs fine n dandy , sounds like you have a faulty unit schmintan
I don't know if your tablet has Knox, you can see status if you go under status in about device, usually, and see if it is "official" or not.
Far as what you did, before you went and loaded a ROM, I would have done a factory reset. Quite often, settings/apps brought over from a previous version cause issue. I don't care if the upgrade tells you too or not, read through the forums and you'll see it littered with people stating how they noticed a massive improvement after their upgrade once they factory reset. Yes, it does suck, but these days Android makes it very easy to do.
schmintan said:
After a lot of issues i just ended up downgrading back to kitkat on my galaxyTab S8.4 wifi, from lollipop.
Issues i was experiencing were:
-totally unreliable battery meter & performance. - Could read 100%, and 10 mins later would read 5% and turn off.
-screen flicker - lines would flicker across the screen randomly, usually before the device crashed.
-Rebooting - the device would randomly reboot, but usually happened 3-4 times per hour, making the device useless.
-screen freeze - the touchscreen would stop working randomly, usually before it rebooted itself.
Ive just gone back to kitkat (voided my warranty in the process) and its still to be seen if downgrading resolves the battery issue, but already the screen flicker seems to be gone. Il update after a day or two use.
Very annoyed with Samsung for releasing an unusable update that rendered the tablet useless & the solution was to load a rom myself, voiding the warranty.
Click to expand...
Click to collapse
Hi, have you solved The issue downvrading? I have The same problems you described.
same issues
White lines then crashes, battery life under 4 hours,
Sounds like a case of broken hardware or one seriously misbehaving application. And in general, if nothing works, I'd recommend to do a full factory reset of the tablet after the lollipop upgrade (erasing all of your data and settings of course). The only issue that concerns me about lollipop is the increase in battery drain at idle. You need to hunt down for the apps that keep your tablet awake. But spend a full battery charge in minutes? No way. Impossible. Get the tablet replaced.
I've been having the same issues. When I did a clean install, the tablet worked fine. However, as I install various apps, the issue begins again. I haven't been able to identify a particular app.
Going to try Marshmallow and see if it's more stable
If you both post your apps list that might be interesting see if you both share an app?
bigaloz said:
I've been having the same issues. When I did a clean install, the tablet worked fine. However, as I install various apps, the issue begins again. I haven't been able to identify a particular app.
Going to try Marshmallow and see if it's more stable
Click to expand...
Click to collapse
nope. no stable mm roms yet.
Well, I've upgraded to Marshmallow and whilst it took a few goes to get it up and running properly (problems with installing gapps) it's working fine (mostly) now.
I've only had it running for a day but it is much smoother and quicker than kitkat and lollipop. So far there hasn't been any random shutdowns. It's too early to say whether battery life is better.
The only problems I've had is the camera isn't working (haven't bothered to look for a fix yet) and auto rotation doesn't work all the time.
I'll keep you up to date on how things go but so far I'm very pleased with the upgrade. I might now upgrade my 10.5
schmintan said:
After a lot of issues i just ended up downgrading back to kitkat on my galaxyTab S8.4 wifi, from lollipop.
Issues i was experiencing were:
-totally unreliable battery meter & performance. - Could read 100%, and 10 mins later would read 5% and turn off.
-screen flicker - lines would flicker across the screen randomly, usually before the device crashed.
-Rebooting - the device would randomly reboot, but usually happened 3-4 times per hour, making the device useless.
-screen freeze - the touchscreen would stop working randomly, usually before it rebooted itself.
Ive just gone back to kitkat (voided my warranty in the process) and its still to be seen if downgrading resolves the battery issue, but already the screen flicker seems to be gone. Il update after a day or two use.
Very annoyed with Samsung for releasing an unusable update that rendered the tablet useless & the solution was to load a rom myself, voiding the warranty.
Click to expand...
Click to collapse
Hola, which procedure did you follow to downgrade OS to kitkat? I m right now on official Lollipop without root.
I had a notion that even if we downgrade to kitkat screen flicker will remain.
Awaiting your reply- thanks in advance
schmintan said:
Very annoyed with Samsung for releasing an unusable update that rendered the tablet useless & the solution was to load a rom myself, voiding the warranty.
Click to expand...
Click to collapse
If your issues are caused by Lollipop wouldn't everyone one else with Lollipop experience the same issues? I have absolutely none of the problems you mentioned and I have had Lollipop installed since it was first made available for this tab. Seems to me you more then likely have a hardware problem. You said you were going to update in a day or two but you haven't so far. I'm curious if downgrading solved your issues.
Sent from my SM-T800 using XDA-Developers mobile app
schmintan said:
After a lot of issues i just ended up downgrading back to kitkat on my galaxyTab S8.4 wifi, from lollipop.
Issues i was experiencing were:
-totally unreliable battery meter & performance. - Could read 100%, and 10 mins later would read 5% and turn off.
-screen flicker - lines would flicker across the screen randomly, usually before the device crashed.
-Rebooting - the device would randomly reboot, but usually happened 3-4 times per hour, making the device useless.
-screen freeze - the touchscreen would stop working randomly, usually before it rebooted itself.
Ive just gone back to kitkat (voided my warranty in the process) and its still to be seen if downgrading resolves the battery issue, but already the screen flicker seems to be gone. Il update after a day or two use.
Very annoyed with Samsung for releasing an unusable update that rendered the tablet useless & the solution was to load a rom myself, voiding the warranty.
Click to expand...
Click to collapse
i have found a fix for the white lines. but you need root
share the fix
zalso said:
i have found a fix for the white lines. but you need root
Click to expand...
Click to collapse
what is the fix? please share! i have root, i have the problem, and it is super irritating!
Fix
brio09 said:
what is the fix? please share! i have root, i have the problem, and it is super irritating!
Click to expand...
Click to collapse
here buddy http://forum.xda-developers.com/gal...-flicker-screen-freezes-t3374336#post66951302
I have the 8.4 and 10.5, both are stock running lollipop and neither device has had the issues you are having!
Sent from my SM-T800 using XDA-Developers mobile app
screen freeze + screen flickers bright flash bars
random reboot, screen freeze and crazy screen flickers with bright flash bars), which occurred when it had low battery
(may be not relevant but have also just given up on firefox for chrome!)
this seems to sum up my experience in the last week or so, I thought I was heading for some hardware failure but parallels what others are reporting....
SM-T705Y running 5.0.2 (LRX22G)
looks like update from 20th May which would be around when this started

WiFi Turning Off During Deep Sleep

Hi all,
Can anyone help with this issue. I can see no long discussion about it which seems to suggest it's either rare (not great) or something I am doing (probably).
My WiFi status appears to be fine throughout the day, when in regular use. I have no speed issues (connection speeds as expected for my home internet), no random drops or on/off switches and no seeming battery drain. I have all additional services on (Bluetooth, location and NFC as I want the phone to be fully functional at all times and not just 'look nice') and despite this I get what I would expect in battery life (c. 6 hrs screen on time). YET, amongst a few other problems (what is the slider customisation about - awful!) the one I can't fathom is this:
My WiFi switches off over night presumably when the phone goes into deep sleep. I have gone into the advanced settings and set it to 'Always on' but this doesn't seem to keep it 'always on'. I wake up in the morning and it is off. I was running some Tasker profiles (which seem to make little difference given the slider issue noted above) but actually my WiFi isn't one off the Tasks effected by a night time profile.
Any help would be appreciated.
AS a secondary question, I switched my VPN over to Canada as suggested and was provided with the Nougat update. I haven't yet tried it but was wondering if there are any bugs that I should consider before switching over given I am 4 days into owning this phone and still haven't ironed out certain things in Marshmallow.
Just as a follow up question, would the 'turn Doze off' option help with this? Surely I shouldn't have to do this though?
Am I the only one having this issue? That would suck. Even so, would anybody more adept at these things than me like to have a guess at solving the issue.
IV had agresive dose mode on and haven't had any wifi problems but I am on 4.0.1 so might want to just update it as it's really stable and I haven't had any issue except having to reconfigure the APN settings. PS if you do update reset you phone after as some people have said it helps with the new file system.
Greedyfly said:
Hi all,
Can anyone help with this issue. I can see no long discussion about it which seems to suggest it's either rare (not great) or something I am doing (probably).
My WiFi status appears to be fine throughout the day, when in regular use. I have no speed issues (connection speeds as expected for my home internet), no random drops or on/off switches and no seeming battery drain. I have all additional services on (Bluetooth, location and NFC as I want the phone to be fully functional at all times and not just 'look nice') and despite this I get what I would expect in battery life (c. 6 hrs screen on time). YET, amongst a few other problems (what is the slider customisation about - awful!) the one I can't fathom is this:
My WiFi switches off over night presumably when the phone goes into deep sleep. I have gone into the advanced settings and set it to 'Always on' but this doesn't seem to keep it 'always on'. I wake up in the morning and it is off. I was running some Tasker profiles (which seem to make little difference given the slider issue noted above) but actually my WiFi isn't one off the Tasks effected by a night time profile.
Any help would be appreciated.
AS a secondary question, I switched my VPN over to Canada as suggested and was provided with the Nougat update. I haven't yet tried it but was wondering if there are any bugs that I should consider before switching over given I am 4 days into owning this phone and still haven't ironed out certain things in Marshmallow.
Click to expand...
Click to collapse
This happens when people is crying about updates every day. Then, when the updates are available, they update it in the first minute and again, they start crying, that they encounter bugs and stuff that doesnt work as it should, even if they dont have any idea how to revert their OS to the previous working one. People should learn how to be patient and enjoy their phones without being so greedy about updates.
Just sit tight, enjoy your phone, READ forums about latest updates and the problems encountered on that specific update ( since its still a beta update, and an early one , called Beta 1 ). If they seem to be fine with those issue, ONLY then should update to the latest one.
smilirulz said:
This happens when people is crying about updates every day. Then, when the updates are available, they update it in the first minute and again, they start crying, that they encounter bugs and stuff that doesnt work as it should, even if they dont have any idea how to revert their OS to the previous working one. People should learn how to be patient and enjoy their phones without being so greedy about updates.
Just sit tight, enjoy your phone, READ forums about latest updates and the problems encountered on that specific update ( since its still a beta update, and an early one , called Beta 1 ). If they seem to be fine with those issue, ONLY then should update to the latest one.
Click to expand...
Click to collapse
I haven't 'cried' about anything, pal, so keep your unhelpful comments to yourself or help. Don't middle ground-it by offering your own personal, and incorrect, opinions.
I hadn't upgraded anything, I was running stock OS and stock marshmallow, so I had literally done nothing to my device other than switch it on and download the same apps I've been using for years.
I've also rooted several devices in the past with no issues and chime in when I can to help, but I'm not a dev and there are far more technologically gifted individuals operating in this forum which is why I sought help here... Not that I got much from you. But I'm more than capable of reading release notes and making sure I can revert backwards before installing anything.
Now to anyone still here, and with the same issue, it appears that carrying out the update to Nougat, re-adding my WiFi networks and clearing system cache solved the problem or at least for the first night. Should this change I'll update here.
ISO_Metric said:
IV had agresive dose mode on and haven't had any wifi problems but I am on 4.0.1 so might want to just update it as it's really stable and I haven't had any issue except having to reconfigure the APN settings. PS if you do update reset you phone after as some people have said it helps with the new file system.
Click to expand...
Click to collapse
Hi Iso, thank you for your response, I hadn't seen this until now.
The upgrade to 4.0.1 does appear to have done the trick somewhat as it stayed on overnight without issue. I did notice it wasn't on a little later this morning but I am giving the device the benefit of the doubt on that one as I have been messing about with certain things and it's possible I or a profile in tasker switched it off.
As an aside do you recommend any other potential fixes, just to be on the safe side.
Did you factory reset after upgrading? Other than that it's probably a app you have I hear Facebook is really bad at battery
ISO_Metric said:
Did you factory reset after upgrading? Other than that it's probably a app you have I hear Facebook is really bad at battery
Click to expand...
Click to collapse
I didn't factory reset, only Cache wipe after the upgrade, and as it seems ok so far, I am reluctant to factory reset the device as it took so long to set up in the first instance.
Should it start becoming an issue again I'll try it but for now...
Also I know there are backup options though I haven't found one that works flawlessly which gives me the confidence to explore this avenue just yet.
You might have to because in nuogat they optimized the file system and in order to get the new one you have to factory reset not 100% sure it affects battery life but it really affects performance, PS also try turning off gestures, ambient display and pocket mode
ISO_Metric said:
You might have to because in nuogat they optimized the file system and in order to get the new one you have to factory reset not 100% sure it affects battery life but it really affects performance, PS also try turning off gestures, ambient display and pocket mode
Click to expand...
Click to collapse
Are you sure ISO? The UI has been updated and the already snappy OS feels snappier. Is there a way to tell for sure if it's required?
If so, any good recommendations for backup capability. I have used Helium to mixed results and I can't use Titanium as I have no root (and don't wish to).
Maybe not but it all elts fails

Phone getting extremely laggy

Good day.
Have anyone experienced same problems with the Huawei P9? My phone is getting more and more laggier, slow, for example, I click on messanger head and it opens after 3 seconds or more, stuttering, camera very slow, google maps is almost unusable sometimes (with downloaded maps), when I type the taps are "registered" a second later, but the whole text is written ... The phone is still under warranty. Did the factory reset and nothing has changed. Antutu scores vary, from 85k-110k (below average), the phone rarely gets hot ...
Did anyone experience this and maybe knows the cause?
Thank you all in advance.
EDIT: EVA-L09 c432B504
Noticed the same on my P9 Plus running the latest CN firmware (B538 - Dec18 Security Patch).
After several months I threw in the towel and went back to B535 (Sept Patch) which is more stable.
I noticed general slowness, as you did, phone restarting if i used the camera at anything under 30% battery, increasingly bad battery life in general (<40% by lunch time vs ~55-60% previously).
Since flashing the older firmware, it's been back to normal again, but it's only been a week, so we'll see how it fares after a month or so.
I'd suggest rolling back to the last 'good' firmware you had, and seeing how you go.

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