yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] freefallin:
Yes Xshad...i installed both and bothe say error code 10...exactlt like your picture.

So you have a Lenovo vibe x2 and you use this method to flash?

I just tried on a different cumputer...same thing...nothing. i cant believe its only my phone...theres gotta be a solution
[Android Q&A, Help & Troubleshooting] kandalph:
Driver problem!!

You need to have the propper one MT6577 VCOM driver. Same issue here, but after installing the driver (thx to Lajos) I was able to flash my device.

http://download841.mediafire.com/qf3htefc80pg/cypm22rgs2k83ji/MT6577+USB+VCOM+drivers.rar

Greetz
[Android Q&A, Help & Troubleshooting] ericp2:
Thanks for this.. indeed, i am using second sim as primary (each SIM are for different countries, and nano+micro makes it cumbersome to switch). I temporarily set sim1 to be primary, and indeed, now i can see all relevant LTE information ( i would not have guessed that!) . I have listed with windiff the complete /system/etc/firmware differences between 1520-CU and S223-AP roms. aside from bootloader files, which are different due to lollipop vs Kitkat, there are very few differences. it must be possible to make TWRP flashable zip files with EU/CU/AP relevant files to be able to switch LTE bands around when traveling. what do you think?
[Android Q&A, Help & Troubleshooting] eryen:
I'm using these files to change modem files. If you want, you can use these files as reference to replace entire folder.

MediaFire link: TWRP-X2-AP_S223_modemfiles.zip - http://www.mediafire.com/download/tcb5s9utvz0utxc/TWRP-X2-AP_S223_modemfiles.zip

MediaFire link: TWRP-X2-CU_1520_modemfiles.zip - http://www.mediafire.com/download/nmdpd66b1wc4ao7/TWRP-X2-CU_1520_modemfiles.zip
[Android Q&A, Help & Troubleshooting] freefallin:
Thats the one i downloaded.
[Android Q&A, Help & Troubleshooting] kandalph:
should work.....

this should work! I had a long time enabling it....

New question: any idea how to totally remove lenovo security?

I removed Lenovo's security by unistalling it with ES task manager. Device is rooted.

After a reboot, the app is here again.....

And btw, this app needs alot of battery.

greetz
[Android Q&A, Help & Troubleshooting] Yoshi_Guy:
Uninstall the app with ES File Explorer from where ever it is under the /system folder. Next, CLEAR YOUR DALVIK CACHE WITH TWRP Recovery. That is why it keeps reappearing, because it is still in the Dalvik Cache.

Source:

Personal Experience ;)
[Android Q&A, Help & Troubleshooting] freefallin:
How long does it take to see the progress bar (green, red...i think) on the Flasstool once you plug the phone to the computer?
[Android Q&A, Help & Troubleshooting] kandalph:
progress bar should bee seen right after you start the firmware update
[Android Q&A, Help & Troubleshooting] fucpl:
Signal issues

Hi All

|Sorry for going off topic but this is only thread I found. I received my X2-CU few days ago and since unboxing I'm experiencing poor/no signal one one of the SIMs. Interesting is the fact that there is only one sim suffering from this issue at a time when i switch Super network register to say SIM2 then SIM1 has no signal or very poor, when i do it for SIM1 then SIM2 has no connection.

Here are steps that i have already undertaken:

-install few different sims

-flash different CU ROMs

-flash AP lollipop ROM with nvram backup and restore with AP modem files left intact

None of the above cured the problem. I'd appreciate any advice. Many thanx in advance

PS. I'm based in UK(if that matters)
[Android Q&A, Help & Troubleshooting] noodless2:
i had a cu version.when i flash ap and eu lollipop wifi and screen brightness doesnt work.how do i solve this problem??:confused:
[Android Q&A, Help & Troubleshooting] freefallin:
Firmware update??? I must be missing somthing. What is supposed to happen right after pressing download on the flash tool and plugging in your turned-off phone to the computer??
[Android Q&A, Help & Troubleshooting] eryen:
After you press download button. You connect your device powered off. Be aware of, while you are powering off device, do not select fast bootup section. Or device will not power of literally.

After connecting device, windows will recognize mtk preloader com port, and flashtool will start to downaload firmware. Wo will see red progress bar at first, then that progrees bar will turn to yellow.

Please check if your mtk preloaader drivers are installed.

Open device manager before connecting powered of vibe x2.

You have to see a new com port installed in system.

If you have a unknown device, be quick and doble click to that. Because if any application does not send keep alive signal to that port,(example fllashtool) preloader procedure will continue to boot as normal way.

There is some links on earlier post about mtk drivers. Even lenovo usb drivers should auto install that driver.
[Android Q&A, Help & Troubleshooting] freefallin:
Thank you for that! So i didnt miss anything.

Like i said before...when i connect my phone to the computer, nothing happens...no progress bar, no nothing :(

My phone does not boot to the OS. It boots only to The stock recovery. So i cant select fast bootup even if i wanted to. If it makes any diffetence, i did unselect fast boot up the last time the phone was working normally.

To recap..my phone only boots to recovery due to a failed update (the recovey screen is all i see when i power up the phone). I want to flash a custom recovery to backup my data before flashing ROM. I followed all the instruction given here on how to flash (not install) TWRP. I installed MTK Preloader successfully, just like the instructions on here. My problem now is the computer is not seeing my phone when I connect the phone to it...so basically, no red progress bar that turns yellow...i press download, connect the turned of phone...the phone turns on and stays on the Lenovo screen...the flash tool stays exactly the same as when before connecting the phone and after pressing download.
[Android Q&A, Help & Troubleshooting] SzegediXY:
Updating to Lollipop from 0

Hi everyone!

First of all, I'm terrible sorry, if there's already a solution. I read a lot of comments, but so many of them were really similiar, I couldn't decide what to follow.

So I got my Vibe X2 - CU from china. It is perfectly ok, everything works fine, I have Kit Kat on it. Of course it has some of those annoying chinese apps like baidu browser, which start running every time, and I have to shut them down. So I saw that the new Lollipop came out, and I read back, and found out that I can install the AP version on CU too.

If anyone could write down every step on how I should update to Lollipop, I would be really thankful. I read that I need TWRP, but it needs root access, and I haven't rooted my phone yet. This is one of the main reasons I haven't started it yet.

Sa basicly:

I've already downloaded this file:

http://www.needrom.com/download/lenovo-x2-ap/

My VIBE X2 is a CU version. I haven't done anything with it since I got it, only installed a few apps. It doesn't have root access yet. I would like to upgrade to Lollipop and have Root access.

I'm terribly sorry, if there's already a solution for this, but since TWRP needs root, and I don't have it, I would like if someone could write aall the steps I need to make in one post, so I wouldn't have to find out what I have to do from several other posts, and since I'm a bit new to this, I really don't want to mess up anything.

Thanke you for your help in advance :)
[Android Q&A, Help & Troubleshooting] fucpl:
Same here!
[Android Q&A, Help & Troubleshooting] eryen:
I've tried to flash these kind of devices from other forums.

These devices do not accept eu/ap lollipop roms.

Return back to kitkat or try x2-to lollipop.

also x2-to do not support European 3g networks. Need to investigate to replace modem files, editing build.prop etc.

I don't have this kind of device so can not work on it.

Maybe, bulk write entire emmc can solve this problem. Because restore nvram did not solved it.

Also please check your box.

There is two kind of CU box.

one of them, barcode sticker have two imei on it. Others even it writes CU, still there is only one imei coded on sticker.

My device is, X2-CU, bought from chine g**kbuying. Works on any kind of firmware. Sticker have two imei number on it.

Also there is 16gb versions, should be TO but named as CU.
[Android Q&A, Help & Troubleshooting] yoyo2nd:
The ROM you downloaded has worked great for my X2-CU.

Here's how to make it work on X2-CU:

1. Download the ROM and SP-Flashtool. Extract them.

2. Download X2-CU TWRP recovery image form the same place you downloaded the Lollipop ROM.

3. Flash the X2-CU TWRP recovery image to your phone using the SP-Flashtool.

Here's How to do it:

a. Open SP Flash Tool and click Scatter Loading, now select the scatter file of your device.

the scatter file is the one called MT6595_Android_scatter.txt that is located in target_bin folder.

b. Make sure that all the boxes are unchecked, except the one labelled Recovery. Click on Recovery and a new window will appear.

c. Browse to the X2-EU/AP TWRP recovery image you've downloaded and click Open.

At this point, make sure that the Recovery is the only one checked and that it is showing the location of your TWRP recovery image.

d. Turn off your phone. When it is totally off, unplug it from the USB cable.

e. Click Download button on the SP Flash Tool, then click Yes. After that connect your switched-OFF phone to your computer using USB Cable.

f. The tool will detect your phone and flash the recovery, if your computer can't detect your phone, re-install the drivers. Wait until the flashing is finished successfully.

4. Boot in recovery by pressing Volume-Up + Volume-Down + Power, release the power button when device vibrates.

5. Through recovery, make a backup of your NVRAM, then reboot your phone and copy the folder TWRP to your computer.

6. Exit recovery. At this point, it will tell you that your phone is not rooted and will ask you whether you want to root it or not. It you like, accept rooting and then reboot.

7. Install the X2-AP ROM. Follow the instructions in the original post. Use "FORMAT ALL + DOWNLOAD". Don't worry, you have your NVRAM.

8. Reboot your phone.

9. Download X2-EU/AP TWRP recovery image.

10. Copy your TWRP folder that contains NVRAM backup from your computer to your phone storage.

10. Flash the X2-EU/AP TWRP recovery image to your phone using the SP-Flashtool with a similar procedure to step 3.

11. Boot in recovery as you did in step 4.

12. Through recovery, restore your NVRAM (ONLY NVRAM), then reboot your phone.

That's all.
[Android Q&A, Help & Troubleshooting] SzegediXY:
[MENTION=6777632]yoyo2nd[/MENTION]

I love you, man, thank you so much, I'll do it at sunday, I love you.
[Android Q&A, Help & Troubleshooting] mbmkaam:
My lenovo x2-cu doesn't appear in my computer

This is my first post on this forum. But i found most of solutions for many problems that i faced before except this one.

My lenovo x2-cu doesn't appear in my computer. This is the main problem that i was faced and it's first step and main step.

My operating system is windows 7 and it dedicated my phone as usp dvice only.

Any solution for this?
[Android Q&A, Help & Troubleshooting] ochayon:
This was exactly what I needed. Thank you!

Just a tip - before flashing the AP TWRP recovery after the update, download the OTA. It makes the update much simpler.

After the OTA go ahead and proceed with TWRP and NVRAM :)

One more thing - TWRP isn't succeeding in rooting at the end of the process.

I guess this has been asked before but I couldn't get it to work - what's the best way to root the Vibe X2-AP after the upgrade to S223/S224 Lollipop?
[Android Q&A, Help & Troubleshooting] LoneWolfSK:
Reinstall drivers
[Android Q&A, Help & Troubleshooting] freefallin:
You are not gonna believe this guys!

All this time, struggle, hassle, frustration and headache...and it was just cz of the friggin cable! AHHH!

Changed it and everything went nice and smooth just like Yoshi and everyone else descibed! Cant believe it, its a brand new "high quality" cable too! Whats crazy is that in he back of my mind...something was telling me to try a different cable all along. Never listened to it cz i refused to believe that was it cz its the most expensive phone cable ive ever bought...and it was working fine charging my other 2 phones and using it as a data cable.

Oh well, sometimes u just never know.

Anyway...turned on the phone and now its on the TWRP recovery screen....what now? YOSHI!! Where you at?!
[Android Q&A, Help & Troubleshooting] haxel66:
please help vibe x2 cu

I bought two vibe x2 cu with EU ROM flashed by seller they wiped nvram imei and serial while doing the flash as these were not in phones when receives just on boxes I've been trying days to get this working I followed the guide on this forum using flash tool but neither phone will root using either I root vroot kingroot phone is recognised by computer all drivers installed and now one of phones is stuck on boot loop just restarting itself all day can't get into any recovery tried power buttons and volume etc. I would try anything flashing with custom or original firmware just so badly want phones to work please somebody help us.

Both on EU rom

One phone stuck on boot loop

Other phone working just no imei serial or nvram folder and can't root

Many thanks
[Android Q&A, Help & Troubleshooting] samer menla:
Heeelp pls

ok guys so i formatted ny phone lollipop, then it said 5 mb update,i pressed intall, it boots to recovery mode, then installation fails, then i reboot and get stuck in booting, tried to turn off, doesnt work, keeps on restarting, booted into safe mode, says to me press and hold power button and normal boot, thats exactly what it says, i cant even see the options for wiping stuff,my version is EU, so pls tell me how to flash stock rom using hat sp flash tool, i only know flashing and those stuff in Samsung, not on lenovo,my phone keeps on rebooting, cant turn off omg, pls guys a reply is REALLY APRECIATED.

THANKS
[Android Q&A, Help & Troubleshooting] freefallin:
Read this thread from page 27 For a solution to your problem.
[Android Q&A, Help & Troubleshooting] t-mobile_mda:
hi guys..

is there any method for rooting x2-ap..? lollipop..?

i tried all known methods but not success.. device i not accepting the TWRP... after succesfully flashing recovery part it goes to stock recovery..
[Android Q&A, Help & Troubleshooting] SO69:
The comments under the rom can be very useful.

That's why they exist.

Look at this.
[Android Q&A, Help & Troubleshooting] t-mobile_mda:
thanx alot it worked... i was trying to update 2.8.6 which didnt worked but 2.8.4 worked..
[Android Q&A, Help & Troubleshooting] Xshad3:
Does xposed framework working on lollipop?
[Android Q&A, Help & Troubleshooting] t3ntacle:
Yes, absolutely :good: But only the "alpha" version, and it can be installed only from recovery.
[Android Q&A, Help & Troubleshooting] Xshad3:
Uh cool :cool: but can you explain how to install it cuz every time when I try to install it result is soft brick... :(
[Android Q&A, Help & Troubleshooting] t3ntacle:
Download XposedInstaller_3.0_alpha4.apk and xposed-v68-sdk21-arm.zip from http://xdaforums.com/showthread.php?t=3034811.

Install the apk, then reboot to TWRP and install update from the zip, that's all.
[Android Q&A, Help & Troubleshooting] ericp2:
OTA update S224 installation on AP/CU success after much effort!

I installed this with quite a bit of pain, so i wanted to share my experience with others.

1. if you are using TWRP recovery, the OTA update won't work. you can download it, but you won't be able to install it, because the update script will fail on sanity checks. Solution: reflash temporarily stock recovery first, and restart the update process. (I also tried to copy downloaded OTA to another folder, and install from recovery, but this does not install either)

2. this is a differential update. this means that it is intended to be applied only on phones running S223. If this is not true, you will be stuck at boot time on first screen. Furthermore (got this from 4pda Russian site), if you have rooted the phone, installed custom launcher, removed system apps, same will happen!!! I know, because it happened to me...

In the end, i had to reflash the s223 update completely first (after having backed up pictures, and whatever else you want to keep from SD card, because all will be gone after flashing...), configured just the minimum to have wifi, downloaded OTA update and applied it. first boot was long, but this worked. The Russian site mentions that it should work with just reflashing the system partition, but this did not work for me. i also tried to restore a Nandroid backup of system , but this did not work either. Incidentally, somebody mentionned in this thread that recovery restore does not work properly, and i can confirm that the full backup i did before doing all this could not restore the device to it's previous state. Something's off with TWRP 2.8.6.0 for this phone, when backuping entire partitions maybe?

3. if, like me, your phone is actually a CU converted to AP, you will have to additionally reflash TWRP, and install the CU modem files mentionned by Eryen in post #280 of this thread, from recovery.

Since phone has already been converted before when I installed S223, re-flashing of S223 is "download only", not "format all", so NVRAM stays intact.

I had first tried "to be smart", and use a TWRP compatible S224 which i had found on the 4pda russian site, but in the end, it's far easier to use stock recovery to do this. I am now running a S224 on my phone and all is working correctly, and phone is rooted (through TWRP, supersu installation). you won't find much visible changes on this update, however, it seems that it's the first one running ART instead of Dalvik, and that is significant enough in terms of app charging time and battery impact.

I hope that somebody here can come up with some ideas to provide a non-differential update , as obviously this is a really painfull process here, when new updates come in the future (S225,S226...etc) !!
[Android Q&A, Help & Troubleshooting] eryen:
1.After update to 224, you can readback with sp flash tool needed partitions.

Kernel, recovery and system. Replace them in previouse full flash files.

so you can create a full flashable files instead of ota update.

2. About backup/restore system partition on recovery. Android changed system partition type in lollipop, so atm non of recovery applications can not restore system partition as lollipop supported format. (As i know, maybe a new version on twrp or cwm can capable to do)

So do not trust to system backup/restore option for now.
[Android Q&A, Help & Troubleshooting] mbmkaam:
SOS My phone boot-loop help me

My phone lenovo vibe x2-CU in boot-loop, anyone can help me to solve this problem. heeeeeeeeelp:(
[Android Q&A, Help & Troubleshooting] Xshad3:
Just flash cu rom and you are done...

---------- Post added at 17:22 ---------- Previous post was at 17:20 ----------

Guys how do i update phone after i download system update. I use twrp recovery and after phone reboot in recovery just stay there without doing anything.
[Android Q&A, Help & Troubleshooting] mbmkaam:
the phone is restarting the computer can't recognize it

MT65 XX Perloader appears in device manager for seconds and disappear again how to install the CU rom in it can give tutorial for that

thank you for your answer.
[Android Q&A, Help & Troubleshooting] Xshad3:
I've have little experience with flashing, but i successfully flashed my EU vibe by doing steps described bottom.

Try them on your own risk!

Does your phone have enabled USB debugging and disabled fastboot? If yes then you can proceed with flashing new rom, if not i don't know if next steps are going to work :(

If your phone doesn't want to turn off when you press and hold power button, enter in recovery and shut it from there.

Install this Lenovo USB Drivers.

Then install MTK USB COM Driver SDK (you need to install DA USB VCOM Port and PreLoader USB VCOM). Follow this guide: For Windows XP, Vista and Windows 7 or this guide of you are with: Windows 8, 8.1 or Windows 10.

After this drivers your phone should be recognize it when it's turned off.

Find your cu rom that you like to flash ( Read description and choose rom you like more and download it.) This or This or This one.

Download SP Flash Tool. Run it as administrator. Open scatter file (that text file) in rom folder (extract rom if it's under from of archive). Go to Options/Download and make sure DA DL ALL with Checksum is . Then go to main window and make sure there is selected "Download Only" from this dropbox below scatter-loading file. Now press download and connect your TURNED OFF phone. The process will start and bar at bottom of the window will became red then yellow then grey and green circle will appear once flashing is done.

Now turn on your phone and see if everything is okay, if not report what happen.

Wish you Good Luck. Hope you can make it ;)
[Android Q&A, Help & Troubleshooting] ericp2:
Hi Eryen, thanks for feedback. very annoying about the system partition restore from TWRP! can you elaborate? i have not found any details about this anywhere. somehow, it must be related to:

- partition type mismatch (but it's still ext4 isn't it?)

- missing partition in backup (like preload, i don't know?)

- incomplete partition backup (incorrect start/end addresses?)

- setuid

anyways, maybe by not reformatting partition (ie, just a rm) it may then just be like another update, and work... what do you think? is only the system partition concerned here? (nvram certainly works)
[Android Q&A, Help & Troubleshooting] eryen:
Yep only system partition. Nearly all big brands started to use this new kind of partition. Because of that there is new tools to extract/convert factory system.img to usable regular ext4 cantainers.

As you mentioned, using -rm option might solve restoring issue via bypass formatting system partition. Did not tried yet.
[Android Q&A, Help & Troubleshooting] Xshad3:
Hello guys it's me again with some noobish question :rolleyes:

I'm which partition is stored imei and sn?

I want to make back up of them and of modem files :)

I've just found an app from market called "Partitions Backups" but don't know which partition I should back-up.
[Android Q&A, Help & Troubleshooting] ericp2:
Hi, imei,sn,... infos are stored in the nvram partition (it's always a good idea to have a backup of it anyways). modem files however, are stored in /system/etc/firmware, which would mean backing up the entire system partition. however, if you see above posts, don't rely on system partition backup. there's something wrong with it!. so you can backup the folder using adb or some root explorer.

you can also find in earlier posts, cu and ap modem zip files that you can install through TWRP, so you may not need to do this anyways.
[Android Q&A, Help & Troubleshooting] Xshad3:
Does new twrp 2.8.7.x working on our device's?
[Android Q&A, Help & Troubleshooting] arnold8008:
Brother someone please help me I have formatted my device by spflash tool and then installed a stock ROM provided at needrom for X2 AP now my device is showing both Sim networks but I am unable to call from Sim 1 it says called from out of network

Hope that a backup of nvram will do it for me

Please help. !!!!!!
[Android Q&A, Help & Troubleshooting] arnold8008:
Brother I am facing all the three of above problems

Please provide solution

---------- Post added at 06:35 PM ---------- Previous post was at 06:32 PM ----------

Brother please pm me the same

Same issue here facing the NVRam Warning in WiFi
[Android Q&A, Help & Troubleshooting] Xshad3:
Here in this thread was uploaded modem files for ap and cu version. Just search them.

Why you format your device when you know you didnt make backup of nvram and modem files?