Can't downgrade after buggy upgrade to lollipop - MT2-L01 - Huawei Ascend Mate 2

So I have upgrade the phone to the official lollipop version as suggested by xordos in this thread: http://forum.xda-developers.com/ascend-mate2/general/mt2-l01-t3404063?nocache=1
Unfortunately Huawei made an awful job with this upgrade, there are too many unbearable bugs
Even worse, I do not know how to downgrade it back to kitkat. I've tried flashing the kitkat rom but I got a fail. On the web I've seen many instructions on how to downgrade the MT2-L03 but I cannot find anything regarding my MT2-L01
Any help appreciated, it's now been a few months with this buggy update and this phone is becoming a nightmare... google services don't work, I cannot install any app, sometimes the battery dies overnight and even the alarm is not working anymore...

Be careful, ROMs don't interchange with the different models, i.e. L03 doesn't work for L01.
http://www.emui.com/plugin/hwdownload/detail?modelId=55
Sent from my iPad using Tapatalk

Yes I know that... as I wrote I used a MT2-L01 specific ROM for android 5.1 (Update B850), but this system update is horribly buggy. Now the problem is I cannot normally go back just flashing an older date ROM... I get a FAIL screen.

Related

[Q] Advice: official gingerbread vs. home made

Hi, I'm a noob seeking advice. I rooted my phone a few weeks back just because I could, but haven't really done much with it since. I haven't upgraded from 2.2.1 yet -half because I've been busy and half because I'm shy about bugs.
My question is: since LG claims it's going to release the official upgrade this month, what are the advantages of official upgrade versus unofficial? It seems like every unofficial one has bugs still, so I'd be tempted to go back to official. Also, since I've already rooted it, I'm under the impression that kills official updates. If I want to go back to the official version, would I have to unroot it first or is there a way to just allow the official update to go through?
seokso said:
Hi, I'm a noob seeking advice. I rooted my phone a few weeks back just because I could, but haven't really done much with it since. I haven't upgraded from 2.2.1 yet -half because I've been busy and half because I'm shy about bugs.
My question is: since LG claims it's going to release the official upgrade this month, what are the advantages of official upgrade versus unofficial? It seems like every unofficial one has bugs still, so I'd be tempted to go back to official. Also, since I've already rooted it, I'm under the impression that kills official updates. If I want to go back to the official version, would I have to unroot it first or is there a way to just allow the official update to go through?
Click to expand...
Click to collapse
About the 2.3 official update, everyone is waiting for that, since 2.3 unoficial Roms have bugs and unimplemented features. For example, I love the CyanogenMod rom but I had to gave up on it since the the bluetooth is not working for auriculars and for the bluetooth system on my car. The 2.3 official update will solve all the problems for these current unoficial Roms, so if you really need a fully working Rom, better not go for those 2.3 Roms available.
You should not upgrade to 2.2.1 (or 2.2.2) using the regular LG update method. That will "unroot" your phone. There are 2.2.1 and 2.2.2 official unrooted Roms (just google for that, you will find them pretty easy). In that case you won't use the KDZ method but the safer Android Recovery method (avoid using the KDZ!! it's the easiest way to kill your phone!!).
So... if you just want to "unroot" your phone, you can always get the official update back in your phone, by using the KDZ method. KDZ reflashes your phone, and that's why the risk is higher than using the Android Recovery method which one wipes out some things like /system/*
mix em both and they will shine...I hope LG's release sky rocket's mik CM7 rom and then i will permanently switch to CM...they simply rock..
l4g4rt0 said:
About the 2.3 official update, everyone is waiting for that, since 2.3 unoficial Roms have bugs and unimplemented features. For example, I love the CyanogenMod rom but I had to gave up on it since the the bluetooth is not working for auriculars and for the bluetooth system on my car.
Click to expand...
Click to collapse
That's exactly why I haven't gone for it yet. That and I've heard the GPS is still buggy.
l4g4rt0 said:
You should not upgrade to 2.2.1 (or 2.2.2) using the regular LG update method. That will "unroot" your phone.
Click to expand...
Click to collapse
I already had the official 2.2.1 before I rooted with GingerBreak, and haven't changed from that. I thought that rooting the phone would automatically block the OTA updates. Is there a way to simply allow the OTA 2.3 update when it comes?
As for kdz versus Android Recovery, everything I've seen around the web for returning to stock says to flash using kdz. Are you talking about using home+vol down+power?

[Q] Is it just me, or is everyone with S-on stuck?

I am fairly new to the whole ROM thing on this device. I have experience with older phones and am just getting back into this recently. That being said...
Current state is: Bootloader unlocked, currently running stock 4.4.4, Sense 6.0, Kernel 3.4.0-g931e842, Build 3.42.502.1 CL441323; ROM applied via RUU. (RUU_M8_[email protected]41216A_40.34.C35006.02_F_release_407726_signed_2)
Bottom line is that since I have attempted to root and flash ROMs I have had issues with making and/or receiving calls, or no SIM recognized at all, requiring S-off/firmware upgrades, etc.
I am looking for a stable build ROM which is compatible with the 4.4.4 firmware on my device which can be applied without obtaining s-off. Main goal is to be able to personalize the UI and to run a faster, debloated ROM.
Tried first using Renovate 5.0... could not receive calls on that one.
Removed. back to stock.
Next I found a Lollipop 5.0.1 ROM (HTC_One_M8_Lollipop_5.0.1LRX22C) which did not appear to require firmware updates... seemed to work great... except that I could not receive calls...
Removed... back to stock.
Next, I used ViperOneM8 and really liked it, but had to abandon once I was told by people that they were still getting sent straight to voice mail.
I did get some calls, so I tested having some people call me and it seemed fine... well turned out that during those tests I was on the 3G network... Once again, troubleshot down to the fact that anytime I was on 4G network I could not receive calls. Having had no way to change my network selection in this ROM (error was displayed when I attempted this). Contacted their support to confirm my issue. They are aware, no resolution available.
Removed... back to stock.
So my question is, are there any options OTHER THAN paying $25 to use Sunshine to get S-off, upgrade firmware? I am not a developer and I love my M8. I know there are people here who know exactly what I need and understand what I am looking for. Thanks in advance for any assistance.
GA_Android said:
Next I found a Lollipop 5.0.1 ROM (HTC_One_M8_Lollipop_5.0.1LRX22C) which did not appear to require firmware updates... seemed to work great... except that I could not receive calls...
Removed... back to stock.
Click to expand...
Click to collapse
I can't tell what ROM your are talking about based on that description. Possibly GPE stock rooted?
What I can tell you, is that most any Lollipop Sense ROM will have issues when used alongside 4.4.4 firmware.
Sense 4.4.4 ROMs will play well with your firmware, as will a number of 4.4.4 and 5.0 GPE and AOSP ROMs (that specifically state they support 4.4.4 firmware). However, when it comes to AT&T, there is more at play then whether the ROM corresponds to the firmware. That other complication is that AT&T does some annoyingly unique things with their network. In the past, this has included changes to build.prop and even the signal icons, which sometimes caused "international" custom ROMs to have some issues. And now you see that their HD Voice (Voice over LTE) is messing with some custom ROMs. As the other thread you posted in mentioned "blame AT&T".
Running an AT&T base 4.4.4 ROM is your best bet for trouble-free use on AT&T's network. WNC's ROM might fit the bill for what you want (debloated) and is often where I send folks that want a bug-free experience on AT&T (while retaining some AT&T specific features). The 3.28 version ROM is what you should try: http://forum.xda-developers.com/att-htc-one-m8/development/att-4-4-3-2-22-1540-3-debloated-sense-6-t2837365
There are other ROMs that might work for you. But the above is my suggestion, at least as a start.
redpoint73 said:
I can't tell what ROM your are talking about based on that description. Possibly GPE stock rooted?
What I can tell you, is that most any Lollipop Sense ROM will have issues when used alongside 4.4.4 firmware.
Sense 4.4.4 ROMs will play well with your firmware, as will a number of 4.4.4 and 5.0 GPE and AOSP ROMs (that specifically state they support 4.4.4 firmware). However, when it comes to AT&T, there is more at play then whether the ROM corresponds to the firmware. That other complication is that AT&T does some annoyingly unique things with their network. In the past, this has included changes to build.prop and even the signal icons, which sometimes caused "international" custom ROMs to have some issues. And now you see that their HD Voice (Voice over LTE) is messing with some custom ROMs. As the other thread you posted in mentioned "blame AT&T".
Running an AT&T base 4.4.4 ROM is your best bet for trouble-free use on AT&T's network. WNC's ROM might fit the bill for what you want (debloated) and is often where I send folks that want a bug-free experience on AT&T (while retaining some AT&T specific features). The 3.28 version ROM is what you should try: http://forum.xda-developers.com/att-htc-one-m8/development/att-4-4-3-2-22-1540-3-debloated-sense-6-t2837365
There are other ROMs that might work for you. But the above is my suggestion, at least as a start.
Click to expand...
Click to collapse
You are correct. It is a GPE stock rooted Lollipop ROM. It works just fine as long as I have 3G selected as my network, but it is just not as much flash as I wanted.
I am going to give the one you sited here a look and maybe give it a try. I appreciate your taking the time to reply. It was helpful and informative.
Erring on the Side of Caution
I'm in a similar quandry as the OP. I have lots of experience flashing ROMS on my older phones but trying to keep up with all the changes since getting my M8 has me confused.
Here's my current setup. I'm running Skydragon after trying the last 4.4 milestone of Liquidsmooth. I like both, but am interested in keeping up with the Lollipop guild.
I have Sunshine installed but when I ran it I found out I need to remove or disable Xposed Installer to continue. I'll deal with that by disabling it.
UPDATE: Well, that didn't work. Xposed was installed with the ROM and there's no option to uninstall it.
My biggest concern is updating the firmware. From my bootloader info, I'm assuming that I'm way behind on the latest firmware, but after reading so many threads about updating, my head is swimming.
If I need to update, I just want to make sure that I don't brick my phone.
CanuckinPA said:
I have Sunshine installed but when I ran it I found out I need to remove or disable Xposed Installer to continue. I'll deal with that by disabling it.
UPDATE: Well, that didn't work. Xposed was installed with the ROM and there's no option to uninstall it.
Click to expand...
Click to collapse
Return to stock ROM and stock recovery, for optimal configuration for sunshine to work. RUU is probably the easiest way to get back to stock. Backup your personal data, than relock bootloader to run RUU.
CanuckinPA said:
My biggest concern is updating the firmware. From my bootloader info, I'm assuming that I'm way behind on the latest firmware, but after reading so many threads about updating, my head is swimming.
Click to expand...
Click to collapse
Yes, based on your hboot number, your firmware is about as old as it gets (Android 4.4.2).
You can RUU to 4.4.4 firmware without s-off; and Lollipop Skydragon GPE should work fine with 4.4.4 firmware.
You can of course still s-off and update to Lollipop firmware. But you need to use some other firmware besides AT&T (such as Dev Edition, Euro, etc.), since they haven't released a Lollipop update (and therefore no firmware).

Got a new alpha and I have a few questions

So I got a new galaxy alpha (850F) which is an amazing phone by the way but i have a few questions
1) I noticed that sometimes the signal drops to 0 bars for a few seconds then comes back again, is that normal because of the metal frame or what ?
2)How much does the battery take to charge ?
3) I am still on Kitkat 4.4.4 and the lollipop OTA hasn't arrived where I live yet (I don't think it's coming anytime soon) so what's the best course of action, should I stay on kitkat ? Which official rom can I flash using ODIN ? Is there a toolkit for rooting and installing a custom recovery ?
If there are tutorials for these things I'll be thankful.
Hi Mazika2,
1) I have no idea and never experienced what you describe
2) For me battery charging takes about 1h - 1 1/2h with original charging plug (over USB on PC it takes much longer)
3) You can flash any 5.0.2 ROM via Odin.
Root 4.4.4: You can take Kingroot for example, Knox will not be tripped.
Root 5.0.2: http://www.skyneel.com/2014/09/root-samsung-galaxy-alpha-sm-g850f-by-simple-tutorial.html . Knox will be tripped.
Custom recovery: http://forum.xda-developers.com/galaxy-alpha/orig-development/recovery-twrp-2-8-clockworkmod-recovery-t2923587
Is there anything to reset knox like triangle away ?
I read a few threads about flashing stock firmware, what are modems and hidden.img ?
Which is better in terms of stability , battery, etc... kitkat or lollipop ?
And finally let's say I want to upgrade to stock lollipop using ODIN what are the steps to follow ?
sorry if these questions sound nooby .
Mazika2 said:
So I got a new galaxy alpha (850F) which is an amazing phone by the way but i have a few questions
1) I noticed that sometimes the signal drops to 0 bars for a few seconds then comes back again, is that normal because of the metal frame or what ?
2)How much does the battery take to charge ?
3) I am still on Kitkat 4.4.4 and the lollipop OTA hasn't arrived where I live yet (I don't think it's coming anytime soon) so what's the best course of action, should I stay on kitkat ? Which official rom can I flash using ODIN ? Is there a toolkit for rooting and installing a custom recovery ?
If there are tutorials for these things I'll be thankful.
Click to expand...
Click to collapse
1. Issues were noticed on this subject, mainly with 4G network. I changed to 3G and I hadn't more missed calls. I think the problem is more related to inconstant network signal than to the phone itself.
2. With the original adapter is really fast comparing with my old device. I never counted but something like one hour or less.
3. There are people who prefers Kitkat over Lollipop due to better responsiveness. Mine came already with Lollipop so I haven't comparison. For now, I don't have the need to root with custom rom's, the Alpha is superb as it is (except for the annoying touch screen issue...)
Flash
Can I flash a SM G850F firmware on a SMG850M?
Mazika2 said:
Is there anything to reset knox like triangle away ?
I read a few threads about flashing stock firmware, what are modems and hidden.img ?
Which is better in terms of stability , battery, etc... kitkat or lollipop ?
And finally let's say I want to upgrade to stock lollipop using ODIN what are the steps to follow ?
sorry if these questions sound nooby .
Click to expand...
Click to collapse
Knox can't be resetted once it is tripped! Keep that in mind. In terms of stability and battery I would say they are the same. It depends mainly on your daily usage of the phone.
Steps to follow upgrading your firmware with odin can be found here: http://www.pocketpc.ch/samsung-galaxy-s6-s6-edge-root-und-rom/226170-anleitung-flashen-firmware-odin-samsung-galaxy-s6-edge-sm-g920f-g925f.html
danieldp1990 said:
Can I flash a SM G850F firmware on a SMG850M?
Click to expand...
Click to collapse
It's complicated, for two reasons I know of, probably more.
1) I'm not sure the chipsets in the F and the M are the same. I know, for example, that the A is Snapdragon and the M is Exynos. I think the F is Exynos, too, but I'm not positive. You'd need the same chipsets for it to work.
2) It's likely the F and the M have different modems, so if you flash F firmware on an M, you may end up corrupting your EFS folder and blacklisting your phone's IMEI on your carrier. You'd need to find out exactly what frequencies the F supports and make sure the M supports them, too. I've read there is a way around this by somehow re-loading two modem files from your phone's original firmware after installing the other phone's firmware, but I've not found step-by-step instructions that are simple enough for me to understand.
Even if those two issues are resolved, it's still dicey. I really want to find SM-G850T firmware and flash it to my SM-G850M, so we are in a similar boat. I can't even find someone who owns a SM-G850T, let alone the firmware. (I did find a question posted on another Site by an individual who said they own a SM-G850T. Unfortunately, half a dozen emails to this individual have remained unanswered.
so here is what I'm planning on doing
1) while on kitkat I'll root with kingroot without tripping knox to backup the EFS folder
2)flash official 5.0.2 using odin
3) try lollipop then decide whether to stay on it or downgrade to kitkat
I just want to know some things before doing the steps above:
1) what are modems and hidden.img in official firmwares ?
2)after rooting on kitkat, can i flash lollipop directly or do i have to flash official kitkat firmware to unroot then upgrade to kitkat ?
I don't know the answers to your questions: I'm even noobier than you!
I do know that when my SM-G850M upgraded to Lollipop, I HATED it. It ran slower and was choppy in the display animations, it cut battery life by at least a third (with no change in anything after wiping the cache), and I especially hated the new color scheme. So, I went back to KitKat. Had to do a Factory Reset to get the phone out of bootloop, but it was fine after that. EXCEPT, the Lollipop downloader reminder stayed on there and I was not able to stop the app or clear the data (those options in the Application Manager were grayed out. So, I flashed the SM-G850M with KitKat firmware from the Dominican Republic (Orange). I read somewhere that Orange was not planning on releasing Lollipop for their Alpha, so I figured this firmware would be Lollipop Downloader Reminder-Free. So far, so good.

Custom Kitkat ROM with empasis on battery life, or 4.x emulation for 1 app?

The only S5 Kitkat ROMs I've found either haven't been updated in over a year, or many users are reporting severe bugs like no camera support, or severe battery drain issues.
I'm just trying to get an app called Winulator running so I can play Starcraft: Broodwar on android, but it isn't working and one user said that is because Lolipop broke it (I'm on 5.1.1 atm). The app is no longer supported so I don't think it will ever run properly on 5.x. If anyone knows of a way to emulate 4.x for just 1 app maybe that would be the best shortcut for me overall here.
Barring that, could someone please recommend a guide to installing a lightweight, power-user-oriented ROM that is 4.x or older and has excellent battery life? I was going to try the official 4.4.4 VanirAOSP release but there are too many reports of poor battery performance in the last 2 pages of that thread for my liking.
I think the first thing I need to do is unlock the bootloader, and I've yet to find a definite answer on the best method of doing this from FOL1 (12/15). It seems I will need Odin on my PC and I have it. I've also started backing up all the data from my phone by manually copying/pasting to my PC.
I guess once everything is finally backed up (it's taking FOREVER, explorer literally been calculating time to copy for 10 minutes now just on the phone/android folder), then I will try and flash the official 4.4.2 VanirAOSP ROM since that one doesn't have any reports of battery issues and possibly only the camera and a few things won't work.
BTW, is there a step specially to unlock the FOL1 bootloader that I am missing, or can I just flash that ROM with Odin straight up? I found a comment stating NOT to flash 5.1.1 with Odin or I'd be stuck on Lollipop until some new bootloader-unlock method comes out. The 5.1.1 I'm running wasn't flashed with odin it was sent OTA and I've never rooted or had custom rom/bootloader, so I should be good on that I guess?
I am actually about to dive into this, if no one has any suggestions for me: http://forum.xda-developers.com/showthread.php?t=2752995 (don't bother, too many missing major features)
edit: I used this guide and it was quick and painless, highly recommend! http://forum.xda-developers.com/tmo...l/root-how-to-root-sm-g900t-firmware-t3358190
Unfortunately the "sick n twi5ted" rom that I chose to install (only because the 600+ Infinity ROM thread has broken DL links) is a buggy PoS on the g900t so I'm still looking for a decent rom.

Want to update to android pie but can't find the right help?

Hi I have a unlocked Mate 10 pro originally based on 3 network UK (BLA-L09 c782) and I want to upgrade to pie since no update has hit me yet.
I have firmware finder, there is a Pie update available however not approved for installation, If it's safe to still update it via erecovery, how do I do it?
Do you lose all your data? Is it pretty straight forward?
I don't want to click the option and end up bricking my phone lol.
I haven't done anything similar to this in over 5 years when i was addicted to installing ROMs so i'm very wary and a complete noob again!
jamanthphoto said:
Hi I have a unlocked Mate 10 pro originally based on 3 network UK (BLA-L09 c782) and I want to upgrade to pie since no update has hit me yet.
I have firmware finder, there is a Pie update available however not approved for installation, If it's safe to still update it via erecovery, how do I do it?
Do you lose all your data? Is it pretty straight forward?
I don't want to click the option and end up bricking my phone lol.
I haven't done anything similar to this in over 5 years when i was addicted to installing ROMs so i'm very wary and a complete noob again!
Click to expand...
Click to collapse
If it's not yet approved for installation then despite downloading, it won't update but will give you an error. This was my experience on a C158 version. The erecovery update doesn't delete your data unless you're downgrading to Oreo from Pie.
I wrote instructions for Firmware Finder/DNS update. This is like OTA, you keep all your data and settings.
Hope it helps.
Patience is a virtue! It will be available OTA very soon. Besides, there's nothing that different from Oreo that will change your day-to-day life in any meaningful way. Also, these Huawei phones are very finicky when it comes to doing anything beyond what Huawei allows...just read through this forum a little and you will see that many, many unfortunate end users make a mess of their phones by trying things that are not safe to try. YMMV

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