[ROM][android 12] AospExtended ROM V9.X [OFFICIAL]

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Jan 1, 2019
6
0
Lenovo Zuk Z2 Pro
I also have heat issues. The Phone heats up to the point were it is barely touchable. CPU seems to be running on full power, although there is no major app running. ACCU Battery does not give an indication if any process is consuming a lot of power.
I'll try power safe mode next. Does anyone have a solution yet? Could a fresh install of the ROM help?

EDIT: The Displayed Values for my CPU seem static, when using the "normal" mode. In power safe mode the CPU seem to change dynamically. Also, in the power settings I can see that "media storage" (or "Medienspeicher" in german) is used the most, even after restricting the usage in the background.
 
Last edited:

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
@Borg666
Thanks for the info.
But after flashing Flame GApps
FlameGApps-12.1-full-arm64-20220612.zip
Play Store seems to be OK. Other apps, too.
Waiting for the next Store update to test.

Do you know if there's an certain advantage of "your" Flame GApps over the well known OpenGApps on our device?
Thanks! :)
 

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
I also have heat issues. The Phone heats up to the point were it is barely touchable. CPU seems to be running on full power, although there is no major app running. ACCU Battery does not give an indication if any process is consuming a lot of power.

in my point of view, any App which causes larger data usage could be the culprit for this behavior. In my case it was Google Chrome - in special, the synchronisation of Google Chrome, which led to high battery usage of Google Play services... 🤷🏼‍♂️
Maybe it could be something similar in your case, so that the media storage is only the effect, but the cause could be somewhere else?
A possible work around could be, just stop the app/service, and delete all app data.
After that restart the app - this could solve such kind of issues. 🤷🏼‍♂️
 

maekus69

Member
Nov 28, 2010
20
4
Germany
Lenovo Zuk Z2 Pro
Do you know if there's an certain advantage of "your" Flame GApps over the well known OpenGApps on our device?
Thanks! :)
Take whatever you like more but until now there's no stable OpenGApps for Android 12 as far as I know.
;)
 

maekus69

Member
Nov 28, 2010
20
4
Germany
Lenovo Zuk Z2 Pro
in my point of view, any App which causes larger data usage could be the culprit for this behavior. In my case it was Google Chrome - in special, the synchronisation of Google Chrome, which led to high battery usage of Google Play services... 🤷🏼‍♂️
Maybe it could be something similar in your case, so that the media storage is only the effect, but the cause could be somewhere else?
A possible work around could be, just stop the app/service, and delete all app data.
After that restart the app - this could solve such kind of issues. 🤷🏼‍♂️
I can confirm that it's hard to find the real cause of battery drain.
But i see heavy battery drain and heat with Torque and Google Maps.
Both use location and Torque needs bluetooth in addition.
The behavior is reproducible.
I will test a few days with GPS and bluetooth turned off.
 

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
Take whatever you like more but until now there's no stable OpenGApps for Android 12 as far as I know.
;)

Oops, I guess that point goes to you. 😉
Do you know if it is possible to flash the GApps versions back and forth between the different versions (e.g. FlameG->openG->whateverG?), in order to be able to switch to open-g-apps later on, when they're available then?
My intention is to flash newer GApps in order to get rid of my temperature/battery issue with regards to Google Play services (in my case Google Chrome synchronisation)
 
Last edited:

maekus69

Member
Nov 28, 2010
20
4
Germany
Lenovo Zuk Z2 Pro
Oops, I guess that point goes to you. 😉
Do you know if it is possible to flash the GApps versions back and forth between the different versions (e.g. FlameG->openG->whateverG?), in order to be able to switch to open-g-apps later on, when they're available then?
My intention is to flash newer GApps in order to get rid of my temperature/battery issue with regards to Google Play services (in my case Google Chrome synchronisation)
Should be working but a clean installation should be prefered.
If you want to you could take the OpenGApps 12L test version.
OpenGApps
 

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
Last edited:

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
To Borg666 and of course anyone interested. 👀
Hi Barkuti,

Thanks again for your Tutorial and the tons of links. 😅👏🏼👌🏼

For replacing the backcover I'm looking for some black "gummy" glue like this - do you have some advice for this as well? 😅👍🏼



Thanks! 😃
 

Barkuti

Senior Member
Jul 22, 2006
143
37
Alhama de Murcia
Hi Barkuti,

Thanks again for your Tutorial and the tons of links. 😅👏🏼👌🏼

For replacing the backcover I'm looking for some black "gummy" glue like this - do you have some advice for this as well? 😅👍🏼


Thanks! 😃
Yes Borg666, I know these adhesives very well. In my experience with the stuff, I can say that there are a few brands and a bunch of denominations being used. Zhanlida is a very well known brand, with B6000, T8000 and T7000 among its adhesive denominations. These adhesives are basically the same, with only small variations in formulation like slight density changes and different adhesive color tone (T7000 is dark color). In my experience, they all work well and are a must for smartphone repairs, being slow to cure adhesives which work well for lots of things. For example, it is common to use battery adhesive tabs and other commercial gimmicks, but in practice a bit of these glues is all you need to properly fix a battery without problems, saving some money.
Money is precious to me. I spend with great care. My latest adhesive buy was a pair of 110 ml tubes of Bulaien B-7000 adhesive from here. Paid less than $7 for them, and of course my adhesive is sleeping in a drawer at home since some weeks ago.
For genuine Zhanlida T-7000 to Germany, grab some here and save money. 😉
 
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Reactions: Borg666

maekus69

Member
Nov 28, 2010
20
4
Germany
Lenovo Zuk Z2 Pro
Sorry for asking some OT - which OBD Adapter are you using? Do you have an advise which and where to buy, at AliExpress? 😁😅

[Update:]
I just decided for the "ELM327 V1.5 Pic18F25K80" with double PCB. Let's wait and see what it's good for... 😁🤷‍♂️
Hi Borg666,
Looks familiar to me.
The ELM units work quite good. I bought one on Ali and one on Amazon.
Cheap and limited functions but enough to reset errors in control unit.
 

emilic

Senior Member
Mar 15, 2007
177
27
I also have heat issues. The Phone heats up to the point were it is barely touchable. CPU seems to be running on full power, although there is no major app running. ACCU Battery does not give an indication if any process is consuming a lot of power.
I'll try power safe mode next. Does anyone have a solution yet? Could a fresh install of the ROM help?

EDIT: The Displayed Values for my CPU seem static, when using the "normal" mode. In power safe mode the CPU seem to change dynamically. Also, in the power settings I can see that "media storage" (or "Medienspeicher" in german) is used the most, even after restricting the usage in the background.

Hi there, my phone was also warming up a lot when i was charging the phone...
I installed the recommended app ACCA (few post above) and now its behaving a bit better regarding to the heating when charging...
 

Blueboy36

New member
Dec 20, 2010
2
0
Lenovo Zuk Z2 Pro
Oh! I found a seller (just one!) which still sells the specific adhesive of the Z2 Pro back cover here. It's not cheap (I see it for $3.91 + $1.88 S&H), but I refuse to pay too much for the stuff I buy and I wouldn't buy such a thing. The adhesive requires careful placement, so better don't miss. And a full, new back cover (which comes with integrated adhesive) costs just a few bucks more ($9.04), so I would personally not buy the specific adhesives. With the double adhesive tape you can cut a few pieces of it with the right lenght, and place it in the desired spots of the back cover until they all are properly covered. If you miss a placement, you quickly remove the adhesive with a spudger and start over. Takes some more work time, but it'̀s a lot cheaper in raw material cost. And on top of this you will also keep a nice roll of thin double sided tape for other purposes.

Tad off-topic, but for example look at this seller advertisement. I see it asks $10.81 + $4.47 for 2 pieces of the smaller Z2 back cover adhesive. Even if it is 2 pcs, I call that a rip-off! 🤦 Can buy a Lenovo logo Z2 new back cover for $5.38! I've personally bought these back covers, and they look pretty good!

P.S.: I do not mean to be judgmental, but if at this point you don't think I deserve at least a “like!”, I'll have to say shame on you. 😂
Hi Barkuti! My name is David and I live in Madrid.
Sorry to bother you with this, but it seems you are quite an expert regarding this Zuk Z2 Pro.
I've got a Zuk Z2 Pro with the original ENG/CHN ROM. The battery and the front camera need a replacement. I guess I'll buy the spare parts in Aliexpres using your information, and will look for a guy to do the work.
As I do not want to change the phone just for the sake of it, can you address me a guide and download links on how to get Android 12 into this phone?
Please let me know if you think another Android version will be more stable. I mainly use the phone to see videos & music & navigate.
Again, sorry to bother you. My knowledge is close to nil in these matters!
Best regards!
 

Barkuti

Senior Member
Jul 22, 2006
143
37
Alhama de Murcia
Hi Barkuti! My name is David and I live in Madrid.
Sorry to bother you with this, but it seems you are quite an expert regarding this Zuk Z2 Pro.
I've got a Zuk Z2 Pro with the original ENG/CHN ROM. The battery and the front camera need a replacement. I guess I'll buy the spare parts in Aliexpres using your information, and will look for a guy to do the work.
As I do not want to change the phone just for the sake of it, can you address me a guide and download links on how to get Android 12 into this phone?
Please let me know if you think another Android version will be more stable. I mainly use the phone to see videos & music & navigate.
Again, sorry to bother you. My knowledge is close to nil in these matters!
Best regards!
Computer and device software went from decent and easy to customize and hack (in a good sense) back in the early days, to “outright retarded” in lots of ways in the present time. This means that it takes some time for me to customize my computer and smartphone, even if I start from some specifically customized operating system image or Android ROM, but it really pays off. Really.
Things like news, propaganda, pesky mandatory
system software or applications or even any sort of advertising just do not belong to my systems and get “arse kicked” in the best possible way. I also install the most powerful software I can find a use for, like for example Process Hacker in Windows.

How to get Android 12 for the Z2121? This thread is what you are looking for!!! Go to the opening post, and you will find enough information to start with there. But esentially, you'll have to download an Android 12 version of AEX here. For some reason I tried v9.0 in the past, and it totally sucked. Many developer options didn't work properly, even if it was "useable". I also found many glitches in the "extensions" menu section from settings. For me, even if the new AEX v9.1 may be a big improvement, it's just not worth it. Good old Oreo based AEX v5.7 is overall VASTLY SUPERIOR, and has a proper grid view task manager (recents). For this reason I stick with AEX v5.7, period (and I really mean AEX v5.7; AEX v5.8 introduced a bug in screen auto-rotation).

If you want a good battery replacement for the Z2 Pro, get a BL263 here or there. These sellers sell the right stuff. In this case I'd of course choose the cheapest option, but as a rule I always keep at least a couple valid options in my wishlist, just in case.
 
Last edited:
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Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
I'm in the lucky situation to have a second spare Z2 Pro - with the downside, that it's playing dead:
When I press the power button nothing happens.
When I plug it into the charger, the LED flashes red.
When I additionally press power button while charging, the Z2 Pro vibrates briefly after 3 seconds - otherwise nothing happens.
I tried a replacement battery with exactly the same effect above. Any ideas of the possible cause?

This phone already received a replacement battery some day, by an amateur I'm afraid. Possibly someting got damaged by him?
BTW damages and amateurs: I broke my pre-cracked back cover, trying opening the phone :rolleyes::confused: knowing that especially the black ones are hard, even impossible to get anymore... me = idiot! 😵🤷‍♂️
 
Last edited:

Borg666

Senior Member
May 17, 2007
57
10
Xiaomi Mi 5
Lenovo Zuk Z2 Pro
I just recognized that the battery connector looks a little strange - could it be damaged?
I plugged the phone to the charger without any battery, and got the exact same behaviour described above, red LED and so on.
ZUK Z2 Pro battery connector.jpg
 

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    To Borg666 and of course anyone interested. 👀

    I remember not being able to switch any Bluetooth options in the first version of AEX 9.x, and there were other errors or mishaps.
    ¿Gestures? Don't make me laugh. I NEVER use screen gestures. My device navigation exclusively relies on the Zuk Z2 Pro hardware button, with carefully assigned taps, slides and button presses in Extensions -> System -> Buttons. I am a power user, and the way I use my device is radically different from most people. Whatever is pesky, annoying or limiting like the low battery warning or the dumbass high volume limit with periodic warning is blocked, disabled or removed from my system, without any qualms and including system apps if needed. For example the pesky and annoying Play Store remains slept in my system, and I only awake it strictly when required.
    I love and use AEX v5.7 because of things like the grid view task switcher (aka “recents”), which is simply the way all Android task switchers should be, but unfortunately the stock task switcher or recents has been the absolutely retarded and useless gigantic card view since Lollipop (KitKat's one was great), as far as I know. And sorry, but they can stick such task switcher where the sun doesn't shines. Period.

    I have extremely long experience buying all sorts of batteries in AliExpress, and there is a lot of bullshit so beware. Concerning batteries for the Zuk Z2 Pro or any smartphone, as a rule I stick with Nohon branded units (great quality, but overall more expensive) or original ones, which can be found for affordable money taking a good look. There are also a few other good quality and affordable battery brands, though.
    To buy a battery, for a good and quick find knowing the battery code helps a lot. BL263 is the battery code for the Zuk Z2 Pro or Z2121.
    I bought my Z2 Pro second hand by the end of April 2018. It came in pristine condition, albeit its original user gave its battery very poor care. I guess he kept the smartphone fully charged pretty often, which is a complete mistake. Keeping li-ion batteries at high or full states of charge (elevated voltages) quickly reduces their lifespan.
    This is a great article about li-ion batteries: BU-808: How to Prolong Lithium-based Batteries @ Battery University. A little caveat, though. It is said that high depth of discharge negatively affects the lifespan of batteries, but at least with modern quality li-ion batteries I cannot agree. The article is rather old, bear in mind, battery technology has improved. However, “Table 4: Discharge cycles and capacity as a function of charge voltage limit” is very important, and in the paragraph just above it is said “In terms of longevity, the optimal charge voltage is 3.92V/cell”. Remember that this is for the usual 4.2V li-ion batteries, so 3.92V / 4.2V = 0.93̅ or 93.3̅% of maximum charge voltage. Nowaday's smartphone batteries are all high voltage types, and so you need to adjust the optimal charge voltage limit accordingly. The Zuk Z2 Pro's BL263 is a 4.4V battery; for this reason I charge up to 4107mV (93.3̅% of 4.4V) using Advanced Charging Controller (ACCA).
    By the end of April 2019, a year later after I got my Z2 Pro, I bought a Nohon BL263 replacement battery and installed it. I charge it up to 65% (now with 4107mV absolute maximum voltage and reduced maximum current thanks to ACCA; I used Battery Charge Limit at first), discharge it to as low as needed, and my battery still has good health, although I will likely soon buy a new one. Just not now because I have many pending tasks… 😒
    But since you asked for a battery replacement how-to and such, first I will say that a battery replacement for the Z2 Pro is not exactly the easiest. Don't be scared, though, it can be done. Just be careful and patient, careful, and patient… repeat as needed. Smartphones have delicate parts, and you don't want to ruin a part. If you do, you may have to wait some days or a few weeks for any damaged replacement parts, depending on where you buy them and shipping times.
    I have the following value/price BL263 battery sales in my wishlist:
    1. New 100% NEW Battery for Lenovo Zuk BL263 Z2 PRO / BL255 Z1 / BL268 Z2 Z2131 Cell Phone Battery +Gift Tools+Stickers @ Battery experts store.
    2. 100% Original new For Lenovo 3100Mah BL263 Original Battery Replacement for Lenovo ZUK Z2 PRO Z2pro Smart Mobile Phone Battery.
    Just choose the cheapest one to where you live. In my case it is the first one, and both are free shipping to where I live but I don't know if and how the shipping costs vary to where you are.
    The tools in the kits are very basic, and the provided screwdrivers, although useable, usually suck so you will have to be careful, or buy something better.
    YouTube is of help for battery replacement videos, although the Z2 Pro has always been scarce in this respect:
    1. Video is in spanish, but well done. Its duration is incorrectly reported (actual duration 16:21), seems like the uploader had some sort of problem. The use of a hairdrier is not strictly necessary if you go slow and with care. The first challenge is to stick the pick under the back cover, and the usual stock picks are not very sharp (more on this below).
    2. Another video.
    3. This is the only related video I found available back in 2019 when I replaced my battery. Low quality and in chinese, but I made my battery replacement with it. 😊
    You may want to get the following additional parts:
    1. 21 in 1 Mobile Phone Repair Tools Kit Spudger Pry Opening Tool Screwdriver Set for iPhone X 8 7 6S 6 Plus 11 Pro XS Hand Tools Affordable basic tool set with quality parts.
    2. 30Pcs Ultra Thin Slim Plastic Guitar Picks for iPhone Pry Opening Tool Mobile Phone Laptop Repair Hand Tools Kit RXJB Standard guitar picks are thick and will give you a hard time tucking them in below the back cover; these are much better.
    3. 10pcs/Lot Black Plastic Spudger Opener Opening Repair Tools Anti-Skid Pry Nylon Hand Tool Kit for Mobile Phone/Tablet PC Repair Spudgers are very handy and useful, because their flat screwdriver end is very sharp and they can also be used to tuck in below covers and open all sorts of soft material case devices without damaging them. I have a bunch of 'em. 😉
    4. 2mm 3M Double Sided Adhesive Sticker Tape for iPhone / Samsung / HTC Mobile Phone Touch Panel Repair, Length: 50m You will need this thin double sided adhesive to re-glue the back cover after removal, as the stock adhesive will of course @#$%.
    This should get you well covered. However, just in case I made a search for the back cover (I also may order one), and only found white :unsure: ones (the color I don't really care, but looks like there are less replacement parts for sale at this point). Here is a best price link: For Lenovo ZUK Z2 Pro Back Battery Cover Rear Door Housing Case For5.0" Lenovo ZUK Z2 PRO Battery Cover Replacement Parts New back covers should come with pre-glued adhesive, but can't really say. Ask the seller.

    I ended up writing a tutorial LoL! 😂
    This information may serve for a dedicated thread. I'll see. 🧐

    Cheers! 🙂
    3
    Hey folks,

    I created a mirror of most of the ROMs from aospextended.com, just in case they were taken down some day:

    Find my collection of ROMs and some other stuff for z2_row at mega.nz:

    Radio:
    Z2Pro_Radio_Modem_4.0.247_ST_Full.zip
    md5: 1295e6aa18c83db7199c5eff0e35d4d1

    TWRP:
    twrp-3.6.2_9-0-z2_row.img
    md5: a63b8d3cc58fa31f7dcbe2ba0a1e464e

    ROM:
    AospExtended-v9.0-z2_row-OFFICIAL-20220217-2122.zip
    md5: cf1e8a5da7681b03f72fbfaeee21be99

    AospExtended-v9.1-z2_row-OFFICIAL-20220510-2026.zip
    md5: 8adeb5b551d2ec6493595a984b54aa96


    Download @mega.nz:
    https://mega.nz/folder/kuQHnCQZ#P45mHHhmR8aJi2GGq3gwtQ
    3
    Oh! I found a seller (just one!) which still sells the specific adhesive of the Z2 Pro back cover here. It's not cheap (I see it for $3.91 + $1.88 S&H), but I refuse to pay too much for the stuff I buy and I wouldn't buy such a thing. The adhesive requires careful placement, so better don't miss. And a full, new back cover (which comes with integrated adhesive) costs just a few bucks more ($9.04), so I would personally not buy the specific adhesives. With the double adhesive tape you can cut a few pieces of it with the right lenght, and place it in the desired spots of the back cover until they all are properly covered. If you miss a placement, you quickly remove the adhesive with a spudger and start over. Takes some more work time, but it'̀s a lot cheaper in raw material cost. And on top of this you will also keep a nice roll of thin double sided tape for other purposes.

    Tad off-topic, but for example look at this seller advertisement. I see it asks $10.81 + $4.47 for 2 pieces of the smaller Z2 back cover adhesive. Even if it is 2 pcs, I call that a rip-off! 🤦 Can buy a Lenovo logo Z2 new back cover for $5.38! I've personally bought these back covers, and they look pretty good!

    P.S.: I do not mean to be judgmental, but if at this point you don't think I deserve at least a “like!”, I'll have to say shame on you. 😂
    1
    Hi Barkuti! My name is David and I live in Madrid.
    Sorry to bother you with this, but it seems you are quite an expert regarding this Zuk Z2 Pro.
    I've got a Zuk Z2 Pro with the original ENG/CHN ROM. The battery and the front camera need a replacement. I guess I'll buy the spare parts in Aliexpres using your information, and will look for a guy to do the work.
    As I do not want to change the phone just for the sake of it, can you address me a guide and download links on how to get Android 12 into this phone?
    Please let me know if you think another Android version will be more stable. I mainly use the phone to see videos & music & navigate.
    Again, sorry to bother you. My knowledge is close to nil in these matters!
    Best regards!
    Computer and device software went from decent and easy to customize and hack (in a good sense) back in the early days, to “outright retarded” in lots of ways in the present time. This means that it takes some time for me to customize my computer and smartphone, even if I start from some specifically customized operating system image or Android ROM, but it really pays off. Really.
    Things like news, propaganda, pesky mandatory
    system software or applications or even any sort of advertising just do not belong to my systems and get “arse kicked” in the best possible way. I also install the most powerful software I can find a use for, like for example Process Hacker in Windows.

    How to get Android 12 for the Z2121? This thread is what you are looking for!!! Go to the opening post, and you will find enough information to start with there. But esentially, you'll have to download an Android 12 version of AEX here. For some reason I tried v9.0 in the past, and it totally sucked. Many developer options didn't work properly, even if it was "useable". I also found many glitches in the "extensions" menu section from settings. For me, even if the new AEX v9.1 may be a big improvement, it's just not worth it. Good old Oreo based AEX v5.7 is overall VASTLY SUPERIOR, and has a proper grid view task manager (recents). For this reason I stick with AEX v5.7, period (and I really mean AEX v5.7; AEX v5.8 introduced a bug in screen auto-rotation).

    If you want a good battery replacement for the Z2 Pro, get a BL263 here or there. These sellers sell the right stuff. In this case I'd of course choose the cheapest option, but as a rule I always keep at least a couple valid options in my wishlist, just in case.
    1
    Good idea! This ROM definietly deserve separate thread :
    Nice to see a separate thread!
    I'm wondering, are any of you using encryption? Or just unencrypted partitions? Which recovery do you use? I'm still struggling with boot loops as soon as encryption comes into play.
    Hi, I've never usencryption so unfortunatly I don't know how to help.