yashsingh1/xdaforums huggingface dataset:
[Lenovo K900] sacthegreat:
Just got it back from the service centre... They fixed it in 5 min!

But bad news is that the update was downloaded and he updated it to lollipop!! I wanted to remain on 4.4.2!!

Any idea on how to downgrade?

Never Mind! I found it!

Its there in "http://www.needrom.com/category/lenovo/serial-k/k920/".

The machine translation to english is slightly confusing, so I am just putting it in proper english for those of you who want to follow!

Proper English Translation for those who cannot follow the translation given:

Install with QSB Method :

Need a memory card, create folder sdfuse and copy to install on this ROM (QSB tailed).

No need of a memory card - They are refering to Phone Memory.

a) normal phone boot into Android OS, use a USB cable to connect PC, the pop-up screen, select USB mass storage devices, and turn on USB storage device;

b) New sdfuse folder, unrar the downloaded firmware, and copied file QSB to the phone sdfuse directory;

Steps a and b are just to create a folder called "sdfuse" and copy the unrared qsb file into it.

Note: Make sure before upgrading phone there is a certain amount of power

2. T card upgrade process

Long press VOLUP + POWER_KEY enter droidboot, a menu appears and select the fourth SDUPDATE, the bottom of the screen you can see the progress and status upgrade

Enter Download mode by switching off phone, then pressing Volume Up + Power Key together.

Select the 4th option "SD Card Update" and continue the process and voila - you are done!

See "SDCARD UPDATE SUCCESS!!!" Indicates a successful upgrade
[Lenovo K900] vince_junior:
Thanks for the guide sac! Bookmarked!

One question please. Some users said that if you revert to kitkat (from lollipop), dbl tap to wake no longer works. Can u confirm? Thanks.
[Lenovo K900] sacthegreat:
I had my mother board replaced and they put kitkat on that afresh. And I enabled the special features, and enabled double tap feature, but it didn't work.

So I don't think downgrading Will have any effect on the much coveted double tap feature!
[Lenovo K900] guess.whoo:
Hi guys. I´m getting mine tomorrow as a replacement for G2 (I need 2 sims) so I want to ask if I should keep KIT-KAT or upgrade to Lollipop..? are the Lollipop issues solved or not?

Thanks
[Lenovo K900] lockhrt999:
For me lollipop is bug less. KitKat was very buggy in comparison.
[Lenovo K900] guess.whoo:
thanks for reply. Does the phone wake up after tapping?
[Lenovo K900] sacthegreat:
Nopes! Double tap to wake doesn't work, but multi window works!

---------- Post added at 07:22 PM ---------- Previous post was at 07:19 PM ----------

For me, two main issues on lollipop not fixed -

1) Call volume reducing while on active call

2) Display saturation not working - phone looks very very dull without that!
[Lenovo K900] vince_junior:
Ditto.

But for me, i find lollipop smoother and faster in z2 pro.
[Lenovo K900] :
working on something for K920 :) god help me. right now i have adb working at boot, kernel works so i'm trying to get all the pieces needed from stock ROM.

https://github.com/frantisheq/android_device_lenovo_kingdom_row

https://github.com/frantisheq/android_kernel_lenovo_msm8974

https://github.com/frantisheq/proprietary_vendor_lenovo

i'm using this to unpack/repack boot.img https://github.com/xiaolu/mkbootimg_tools and starting it through fastboot boot boot.img
[Lenovo K900] yassero:
Flashing steps explained on the link look too complex. Can it brick the phone?
[Lenovo K900] sacthegreat:
Refer to my response a few posts back..
[Lenovo K900] yassero:
Yes just read it post# 402. Will my data & apps remain preserved after flashing Kitkat?

Also do I have to download & flash the rom 4.4.2 dated 09/07/2014 then flash the update dated 03/23/2015 or only flash the update?

The rom file of 09/07/2014 on "http://www.needrom.com/wp-content/uploads/2014/10/K920_S081_140828_CMCC_qpst.rar" got unpacked into a folder and not qsb file, however the update of 03/23/2015 on "http://www.needrom.com/wp-content/uploads/2015/04/K920_ROW_S143_1502111114.rar" got unpacked into a qsb file.
[Lenovo K900] sacthegreat:
1) Download the 143 ROM. Thats the most stable before lollipop. That will unrar to a .qsb file. Its around 1.4GB. After this, the next update will be the lollipop update.

2) This is a fresh stock rom. So flashing it will remove everything on your phone. Yes, all data will be gone.

But what version are you currently on? If you are on lollipop, I think you have to flash the qsb to downgrade to kitkat. Not sure if flashing the update will work.
[Lenovo K900] yassero:
I am on the latest OTA which is 5.0.2 S_246. The problem is only the update rar 1.4GB got unpacked into a 2.2GB qsb file. The rom itself has a 750MB rar file that got unpacked into a folder full of files. On the same page where the rom link is, there are 2 others links. One for Chinese, so irrelevant and the other for Qualcomm, which I am not sure if I should get but maybe it unpacks into qsb file.
[Lenovo K900] sacthegreat:
If you are on the latest ota, then why would u want kitkat? I wanted kitkat due to the features which I highlighted.

If you want kitkat, download the 143 rom.. That's stable and perfect!
[Lenovo K900] yassero:
lollipop sux. Most apps hang & restart and a lot of features have disappeared.

I downloaded the 143 but it is an update to previous kitkat version. So my question is, can I just flash it or do I have to first flash the rom itself, which unfortunately its rar file is producing a folder & not qsb file?
[Lenovo K900] sacthegreat:
Check the link I posted previously in the guide. That's the one I downloaded and installed.And of course that works coz that's what I tried!
[Lenovo K900] Mittul Shah:
Guyz after going to lollipop I don't think going back is worth as that double tap to wake feature won't be seen in settings if u downgrade
[Lenovo K900] yassero:
The link you posted was "

http://www.needrom.com/category/lenovo/serial-k/k920/" and this has all rom & updates for K920, be it kitkat or lollipop. Please advise which file you have flashed.
[Lenovo K900] sacthegreat:
Ok... Check this one - "http://www.needrom.com/download/lenovo-k920/"

"http://www.needrom.com/wp-content/uploads/2015/04/K920_ROW_S143_1502111114.rar"

This is the one .. S143 ROW.
[Lenovo K900] yassero:
yep that's the one I downloaded. Are you sure about volup+power? cause it only starts the phone normally here.

edit: in my case it is vol down+power and it is option number 5
[Lenovo K900] sacthegreat:
Oh! You have a different model? That's surprising! Anyways if that works, then great, you are back to the awesome kitkat!
[Lenovo K900] yassero:
yuppy.....back on track with KitKat. Thank you so much for your support.
[Lenovo K900] sacthegreat:
Cool! Enjoy! Click on "Features" tab in settings multiple times to activate the hidden features!

Hope someone updates in this thread when the bugs of in call volume and saturation settings are fixed in lollipop!
[Lenovo K900] djshorty:
Are there any hidden features on lollipop?Like multiscreen window,doubletab to wake...?
[Lenovo K900] yassero:
Thanks for the tip. I did but double tap does not work nor does drawing letters to wake up on specific app.
[Lenovo K900] sacthegreat:
Yup! Only the multi window thing works.. Just that we can't put more apps!

I just wish there was a workaround for the double tap to wake!

My friend has an asus zenfone 2.. It has double tap to wake as well as double tap to sleep!
[Lenovo K900] lockhrt999:
[MENTION=4135646]sacthegreat[/MENTION] when you talk about multi window do you mean installing xposed framework or it was inbuilt in KitKat?
[Lenovo K900] sacthegreat:
In built in kitkat.. U need to activate the special features for that..
[Lenovo K900] lockhrt999:
darn. If I knew I wouldn't have rooted the phone and installed xposed framework for that.

Anyway, I have found a trick in lollipop version. On the home screen if you do two finger swipe up or down you get icons snapped to top side or bottom side.
[Lenovo K900] sacthegreat:
No New updates in lollipop?
[Lenovo K900] vince_junior:
None. The lenovo people in the lenovo forum are quiet. A lot of people are already mad.
[Lenovo K900] :
custom kernel for K920

Custom android 5.0 kernel for Lenovo Vibe Z2 Pro - K920.

This is for ROW, don't know if it will work with chinese K920.

Right now it's just stock kernel with KCAL support added so you can install kernel adiutor and change some screen settings. More features to come.

EDIT: Added governors and schedulers.

to try it run "fastboot boot boot_new.img" in fastboot mode

to install "fastboot flash boot boot_new.img"

source: https://github.com/frantisheq/android_kernel_lenovo_msm8974/tree/vibe

download: https://copy.com/4TRsLoyYKq0bKaeE
[Lenovo K900] angel.martinezsanchez.92:
Ok
[Lenovo K900] vince_junior:
Can we post instead to this lenovo k920 dedicated forum?

http://xdaforums.com/t/k920
[Lenovo K900] dansarariu:
hello, does anyone know if it can activate 4g on the sim2?
[Lenovo K900] djshorty:
Nope, sim2 slot is only 2g
[Lenovo K900] lockhrt999:
Does anyone know 'Ok google' works even the screen is off !!! totally like moto x

I think they introduced this with lollipop upgrade.
[Lenovo K900] phrozenflame:
Hi guys,

Need your help, I recently lost my Zenfone 6, thought it's time to upgrade now.

I'm stuck between Huawei Ascend Mate 7 and this, any of you used both and your review?

Also, how is the heating issues? I play alot of games, anyone tried playing summoners war?

Thanks
[Lenovo K900] Wicko+31:
Hi peepsz,

Are there any ROM's for the K920 Pro?

And how can you flash a new ROm to the device?

CAn i use for example, ROm from the K3 Note on the K920 PRO and flash it the same way on the device?

Anyoneee?
[Lenovo K900] Mittul Shah:
New update s277 is available.

Has anyone tried it?
[Lenovo K900] lockhrt999:
No noticeable changes. This is probably one of the last updates for this device. As you may know there's no marshmallow for this mobile.
[Lenovo K900] Spariant:
search for towel root... its available on a russian lenovo-forum site. I have not installed recovery cause dint understand the procedure.
[Lenovo K900] sacthegreat:
Awesome! Thanks! It worked perfectly! So much hassle free!

Btw, what xposed modules u guys using? The vibe module is fairly limiting..

---------- Post added at 03:53 AM ---------- Previous post was at 03:51 AM ----------

I experienced the heating mainly when I use the camera.. very much so when using video mode! Just 3 minutes usage made it hot, but not a deal breaker as of now..
[Lenovo K900] mydroidfren:
do you have a link for photos & videos I can view - planning to get this beast if the photos are great.
[Lenovo K900] sacthegreat:
Haven't fOund time to check properly.. But the photos - particularly the low light ones are way better than my htc one max.. and the normal day photos are made even better by the screen! I am able to change the contrast, hue and saturation however I like!

Videos are ok compared to the max..

I am still keeping my max in case it's better than my vibe.. But day by day, feeling that the vibe is much superior in all aspects!
[Lenovo K900] viruscmotu:
the option to wake screen with the volume works perfectly...u cant calibrate the screen from google ui.. its has only brightness control and wake up time...
[Lenovo K900] Spariant:
I am using the app settings module for per app density, have scaled down the dpi of the whole phone to 530 using textdroid but that messed up the in call UI so used per app density for the latter to restore it to default 630. works perfect. Other module i am usnig is xposed additions to customize softkey buttons behaviour. Like double click back button to launch quickpic, long click back button to launch whatsapp. No hunting for apps.
[Lenovo K900] saifbukhari:
excellent work all of you with your precious inputs, after looking this i have ordered mine and its on its way, can any body shed some light on accessories? as i cant seem to find any.... thanks in advance
[Lenovo K900] wonderbao:
This sounds like a great device.

Unfortunately, they are not available in my country. Any suggestions where I can buy it online without being ripped off like the prices currently in Ebay?
[Lenovo K900] Spariant:
Channel 50 messages

Guys I'm not able to get rid of broadcast messages... Even after switching them off in setting no use... Then froze the cell broadcast service... Still no use... Now have unistalled cell broadcast and rebooted still message coming from channel 50.... What to do? :(:confused:
[Lenovo K900] sacthegreat:
I'm also having the same problem with my vibe!
[Lenovo K900] vince_junior:
Just got my vibe z2 pro earlier. Will make a quick review later.

Question: if i root the phone, will i continue to receive ota updates?
[Lenovo K900] LoveEveryOne:
Goto

messages > hit menu button (left) > more features and settings > message settings > cell broadcast

uncheck everything under sub1 & sub2

*Repeat the process in secure zone if you use it.

That disables them.
[Lenovo K900] takugt:
Thanks for the infos !:good:
[Lenovo K900] vince_junior:
how's your battery life? Mine lasts barely a day with moderate 3g/wigi, few calls and sms, and watching short videos. I dont know maybe this will normalize after the 3rd cycle (but is it really true that 4k screens really eat up batt, even if the batt pack is 4000mah?).
[Lenovo K900] Spariant:
Battery issues

Those who are not getting adequate battery life... Use the power management app... It makes a lot of difference...
[Lenovo K900] sandeeppathak007:
Hi, I m considering of buying this phone could you please share some sample pictures and videos

Thanks in advance
[Lenovo K900] gooberq:
Hi

I'm planning to buy this phone in India and use it in US, does any one know if this phone from India can get LTE in US, this will be my second lenovo phone after k900.

I'm not sure whether there are two variants for this phone.

thanks
[Lenovo K900] goes_like_hell:
Hi,

can somebody tell me something about the dual-sim-functionallity in that lenovo ?

Is it dual-sim-full-active or standby ?

Has it dual-sim with LTE on sim1 and GSm on Sim2 ?

How is the handling of dual-sim ? Define of an default sim in pull down menue ?

Special handling menue for dual sim ?

Som pics of menue ?

Thanks for your doings !
[Lenovo K900] jatingogoi:
Hi,

Could someone tell whether this device support 3G direct video calling.

---------- Post added at 02:15 AM ---------- Previous post was at 02:02 AM ----------

Hi rdosti,

Could you please let me know whether this device support 3G direct video calling.

Thanks

Jatin
[Lenovo K900] vince_junior:
Both sim are active at the same time. Have not tried it coz i have only 1 sim.

Hey i noticed that my power button is loose. Is that tge case for all you users, too?
[Lenovo K900] sandeeppathak007:
Could u please share some sample pictures and videos

Thanks
[Lenovo K900] rdosti:
There is just one variant for now.

---------- Post added at 01:18 PM ---------- Previous post was at 01:18 PM ----------

I will prepare a link very soon.

---------- Post added at 01:19 PM ---------- Previous post was at 01:18 PM ----------

My power buttom is firmly fitted. It is a bit easy to use compared to the volume rockers and that makes it easy to press.

---------- Post added at 01:20 PM ---------- Previous post was at 01:19 PM ----------

Sadly enough I could not find any way to activate 3G Direct video calling.

You would probably want to download and install skype for that.
[Lenovo K900] sandeeppathak007:
Thanks a lot, m just thinking to buy either this or nexus 6 or One Plus One, but more inclined towards this phone as it has a good battery just want to know about camera
[Lenovo K900] vince_junior:
Ihttp://m.gsmarena.com/lenovo_vibe_z2_pro-review-1155.php
[Lenovo K900] sandeeppathak007:
Yeah saw that but the gsmarrna is not trusted as per my experience

Look at their all the review regarding damaging n HTC flagship and each year they kept saying Samsung Galaxy is better than HTC however in reality HTC phones are way better

So I would prefer going by our friends here who are using it n then decide

How's your experience with this phone so far
[Lenovo K900] jatingogoi:
Thanks for the information
[Lenovo K900] slavislavi:
Both sim's are active (dual-standby). If you have a call on one the second is disabled only for call duration.

You can set to always ask or set the default sim for call. The same is for messages.

And of course you can select which sim is used for data.

In user manual is info that one sim is dedicated to LTE. I don't know if there is possible to swap like in phones based on MTK CPUs.
[Lenovo K900] sandeeppathak007:
Thanks a lot for your feedback could u please also suggest on camera performance

Also if nexus 6 is available (as I can wait for a month) with say the price tag of 42k which one will u suggest
[Lenovo K900] Matta_Z:
I need answer to one question, please:

Can 3G/4G be switched to second SIM

via menu

or not ?

On K910 I owned, I had to physically swap SIM cards to get 3G on second carrier.

On my ZTE Nubia Z7 Mini I have menu option to swap 3G/4G to second SIM slot (no need for physical swap).

Please can someone check this out ?

Thanks !
[Lenovo K900] slavislavi:
It's a rom option. In stock rom - NO. We need more Z2Pro developers.
[Lenovo K900] Spariant:
Of you're on xda that means you live tinkering with your phone... Go with nexus 6... I can't tinker much with lenovo vibe z2 pro... Missing the tinkering otherwise the phone is good
[Lenovo K900] sandeeppathak007:
Hi all

As I requested earlier could someone please share some sample pictures taken by this phone as its not available in stores I can't walk in to the store n check it myself n just want to be confirmed before I do the purchase
[Lenovo K900] zema1971:
No 1 слот 3G/4G ,2 слот 2G.
[Lenovo K900] jain.mayush:
Video camera issue

Check this video out

m.youtube.com/watch?v=1f7Ebfk1ad8

You'll find that the video recording lags in artificial and low light. Keeping in mind

This has OIS this is bad. This is what kept me from buying this phone

---------- Post added at 07:16 PM ---------- Previous post was at 06:32 PM ----------

Hi,

Did you notice any lag in video recording. Especially in room light and low light while panning around or in fast moving objects.

As in this video

m.youtube.com/watch?v=1f7Ebfk1ad8
[Lenovo K900] vince_junior:
Ill check. Will be back later.
[Lenovo K900] rdosti:
New firmware update is now available (a 100MB update). Must have something good in it to be that large. This is the second update since it's release which gives me hope and confidence that things on the software end will improve. I just home Android L comes soon now. It may also include improved photography and video though I could not find any changelogs online.

Just updated, and it seems still on 4.4.2 (not 4.4.4) which is a disappointment. Camera auto focus seems quicker and better but that just may be me. I have no idea what has really changed.
[Lenovo K900] sacthegreat:
Yup.. I just updated.. v1.37... dunno the changelog yet.. but important point is that I am rooted and it still did update! Yaay!
[Lenovo K900] rdosti:
That's great !
[Lenovo K900] vince_junior:
[MENTION=4135646]sacthegreat[/MENTION], wow thats great! So you are confirming that even if the device is rooted, it still can receive the OTA update? But did the update unroot your phone? Did you have to reroot?
[Lenovo K900] sacthegreat:
Thanks for asking this question! I hadn't checked! Yup root was gone.. but prerooted apps were still working fine..

But with the towel root app, it got rooted in 2 seconds again!

And yes, even when it's rooted, you do receive ota updates! Hats off to lenovo!
[Lenovo K900] Spariant:
Hi had you rooted prior to the 126 update or after it? last time i tried i could not instal the 126 update being rooted... will try again...
[Lenovo K900] jain.mayush:
Video lag

Hi can you please confirm about the lagginess of video shooting in artificial light / low light.

Thanks
[Lenovo K900] sacthegreat:
I rooted it after the 126 update. I was still searching for a way to root at that time! :rolleyes:
[Lenovo K900] littlejon:
(Un)rooting

I just noticed that there is option to download and install full ROM package from the lenovo vibe UI update app. It's located in the toolbox section of the apps side menu.

The description of the function is: "Device rooted? Update failed? Just relax and try a full ROM package." So what I think this means is that Lenovo counts whit us rooting the phone and unofficially supports it.

After finding this I was comfortable with rooting my phone. The towel root works.

I have nothing to complain about the phone now. It's an amazing device for the price.
[Lenovo K900] vince_junior:
Update app? I cant seem to find that app in my z2 pro.
[Lenovo K900] littlejon:
System Settings -> About phone -> System update
[Lenovo K900] jain.mayush:
Video recording

Hello all,

Can someone please confirm whether video recording lags in low light and artificial light and normal room lit conditions

Thanks in advance
[Lenovo K900] littlejon:
Yes the framerate decreases to about 15fps when in low light. I think this might be a software issue when the camera is compensating exposure by increasing exposition time, which I would expect from any cam with fixed aperture, but that's just my guess. I'll try to do some research on the matter just out of curiosity. But this doesn't bother me at all really.
[Lenovo K900] wonderbao:
Received my phone today.

So far so good, updated the software and rooted with towel root.

Next I switched to stock android and installed adaway.

Didn't find the option to turn off the camera sound so I used root explorer to find the media folder in system and changed the soundfile to camera_click.bak. It worked.
[Lenovo K900] jain.mayush:
Thanks!
[Lenovo K900] rdosti:
Only available in Lenovo UI mode. This is absent from the Google Stock UI Mode.
[Lenovo K900] vince_junior:
My God! I just played the game "free fall" which is just like candy crush and is not that heavy in graphics, for about 10 minutes, and the phone gets too hot! Too hot that literally i can fry an egg on it!

I play the same game in my galaxy tab 1 and note 2 and those two devices never get that hot!
[Lenovo K900] Spariant:
I dint know i could do that. It works. was so much tired of teh camera click sound! thanks
[Lenovo K900] FiremakerP:
Ordered the phone today. How come the K920 doesn't have it's own section? It's a pretty awesome phone if you ask me.
[Lenovo K900] X0LARIUM:
Chinese phone makers don't have a lot of recognition IMHO here on XDA.
[Lenovo K900] FiremakerP:
I don't think that developing should be harder than on a samsung device.
[Lenovo K900] hobitt14:
New SW version...?

Hello guys,

Is there any time roadmap or some source of information, where i can find when some SW release will be out?

I am asking because I saw few posts here about new SW version, but I am still stuck on the K920_ROW_S130_140923. There are is no new SW version available in my country & I live in Slovakia...

Many thanks
[Lenovo K900] clone.x:
Row_s137_141029

Hi, in my country (Czech Republic) is the latest version:

K920_ROW_S137_141029

What new?

Correction of the sound profiles

Rectification work Viber

Correction Hangouts

Other fixes

clone.x
[Lenovo K900] wonderbao:
I have the same software as well.

Don't have any heat issues on my phone. The only game I play is Injustice though.

I'm back to Lenovo UI with go launcher ex. Mainly because we can't change display settings in stock and I think the standard setting is too yellowish. Anyone have a better launcher to recommend?

The only problem I have with the phone is that I can't post pictures on Instagram. Every picture I post turnsblack at the last stage before posting. A weird bug.

Bought the phone from Ebay for 500 Euros since the phone is not available here in Norway. So far all my friends are really impressed when seeing the phone. Even the iPhone owners have to admit this phone feels more premium :good:
[Lenovo K900] slavislavi:
Latest sw name is K920_ROW_S137_1410291303