yashsingh1/xdaforums huggingface dataset:
[Upgrading, Modifying and Unlocking] hasafly:
What's the changelog?
[Upgrading, Modifying and Unlocking] Take-kun:
Dear friend, I'm also Ingress player and I suffer so much playing with this phone. Could unscrew 3 lower screws and take a photo of connectors that you lifted up, please?
[Upgrading, Modifying and Unlocking] pjd64:
Hi,

I might just do that, but first tell me, are you Enlightened or Resistance? ;)

Why do you refer to the 3 lower screws? The GPS antenna is the one connected to the small circuit board on the bottom of the phone?

I lifted up the connectors on that small board, but also the connectors on the motherboard and to get to that one you need to remove 11 more screws.

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
I'm Enlightened. :)

Someone has already tried your trick and confirmed, that gps connector is on the smaller board, which you can reach removing only lower part. He also took a photo and I can't get what exactly should I do :(

I will also check new FW before this, because I have to remove guarantee sticker while unscrewing.
[Upgrading, Modifying and Unlocking] jaw2floor:
What issues are people facing with their 998?

I know there was a microphone issue where it is too quiet, has it been fixed? Also I know GPS is poor but that is apparent with all mediatek devices. What are issues are there? I'm considering buying this phone.

Thanks
[Upgrading, Modifying and Unlocking] Take-kun:
According to needrom.com informations 20140329-161638 is 20140117-181430, the very first, buggy FW, but rooted. No need to install it.

---------- Post added at 07:52 PM ---------- Previous post was at 07:01 PM ----------

I've unscrewed a phone, what do I have to lift up? any suggestions?
[Upgrading, Modifying and Unlocking] hasafly:
Wow...wow....wait a minute.

My ZP998 is working fine and gps too. I use it very well with Sygic Navigation.

Yes i have to fix NTP server to Europe because i'm in Portugal...but now it works very well....dont need to change anything in hardware.

Regards
[Upgrading, Modifying and Unlocking] Take-kun:
I've lifter 3 pins in right-top corner and semi-unscrewed screw in left-top corner. Also checked the connection to the lower board.

In 5 minutes Ingress test, Zopo didn't lose GPS signal even once! It located me correctly, once or twice on the other side of 4 meters street. Works with a little offset, but works.
[Upgrading, Modifying and Unlocking] pjd64:
Hi Take-kun,

I've just arrived home and I was going to open my zp998 and take some photos to help you, but I see that you have already used my "workaround" for the GPS problem,

Is the GPS behavior in Ingress much better now?

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
Probably, better. It's 12 am here now, so I will check tomorrow how GPS works in bus on the way to school. Would be still great, if you at least circle for me objects I should take into consideration on my photos.
[Upgrading, Modifying and Unlocking] pjd64:
OK, done, see the attached photos.

On photo 1 - the motherboard located on the top part of the phone - I've circled in orange the pins I have lifted to reinforce contact. On the other side of the motherboard, on the zone pointed by the red arrow, there are also 2 connector pins on the phone frame that touch the motherboard, I've lifted those too, but to do that you need to disconnect the 2 ribbons coming from the screen and lift the motherboard. I wouldn't do that just now, maybe those aren't related with the GPS...

With the blue circles I've signaled the position of the screws that lock the motherboard in place. As you can see there are only 3 of them, which means that the top right corner of the motherboard can move backward or forward with very little pressure.

On photo 2 - the small circuit board at the bottom of the phone - I've circled also in orange the pins I have lifted to reinforce contact.

Disclaimer: do this at your own risk, it will void the phone warranty. I only did it because I broke the phone's screen, so I had to tear it apart anyway. I am pretty sure that as time goes by the contacts will get weaker, make less pressure on the antenna and the problem will appear again.

And by the way, although GPS behavior improved a lot and I have used it for 2 days now in Ingress without losing fix a single time, I still have to use GPS Test and GPS Locker to get and maintain the GPS fix. If I turn on the phone, turn on the GPS and start Ingress, sometimes it takes forever to get a fix. I do believe there are also SW problems to be solved.

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
I didn't do the red arrow part. I almost dropped a load when my wifi signal rate with 3 meters distance was too low to do anything and phone couldn't find any other wifi, but after restarting wifi module it works fine. I did all the rest you mentioned by myself. I don't think you have to do anything with the lowest pins, imo they are responsible for speaker.
[Upgrading, Modifying and Unlocking] Lovetz:
This "OLD & BUGGY" FW have:

Modem version:

MOLY.WR8.W1315.MD.WG.MP.V21.P18 2014/03/06 15:34

Kernel:

3.4.39

Fri Mar 28 10:59:59 CST 2014

Build:

ZP998 20140329-161638

I do not know what was uploaded to needrom, but this is NEW ROM!

Review from bosspda:
[Upgrading, Modifying and Unlocking] warezjunk:
[MENTION=461614]Lovetz[/MENTION]

And where can we find this ROM ?
[Upgrading, Modifying and Unlocking] Lovetz:
http://xdaforums.com/showpost.php?p=51553238&postcount=430
[Upgrading, Modifying and Unlocking] dragsterman:
Recovery

Did you make the recovery version of this new FW, or where you found it?

Can I flash it with TWRP from 0218 stock, without deleting user data/factory reset?

Thx
[Upgrading, Modifying and Unlocking] pjd64:
Hi,

I think you are absolutely right regarding the speaker connectors.

So, is Ingress any better on your zp998, or was I just lucky with mine?

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
ZP998 still need around 15-20 sec to get a fix, but after that GPS works really better. I played around 1.5h today, I've lost signal once on clear sky. Signal rate is the same like previously, but location was very reliable to reality. It also worked pretty well in bus in a morning, but when I was going back it wasn't that good. Generally I think that GPS was getting a worse performance with time of being used. In the end portal, I had to restart my phone to get a fix. Today, I've flashed the newest ROM and tried to get fix in GPS Test on clear sky - nothing. Changed gps.conf - nothing. Placed near windows for 25 minutes - nothing. Run the engineer mode - works. Strange, I will test it more tomorrow on clear sky.
[Upgrading, Modifying and Unlocking] pjd64:
Try installing "GPS Locker" from the Play Store. Use it to get a fix before launching Ingress. Use the option on "GPS Locker" to update A-GPS after getting a fix. Wait a bit after getting the GPS fix and let the number of satellites in use grow till it stabilizes. Leave "GPS Locker" running in the background and then start Ingress.

After a few hours you may need to update A-GPS again on "GPS Locker". So if you use it in the morning to play Ingress, stop playing when you are at work and then start playing again in the afternoon when you leave, you need to restart "GPS Locker" or at least force an A-GPS update.

Tell me if it helps. It works for me.

By the way, today I've noticed that when I am surrounded by taller buildings the GPS still behaves as bad as before and it even loses fix. But after, when I get to a clearer area it regains the fix all by itself, without the need to go back to GPS Locker.

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Lovetz:
At the same post: http://xdaforums.com/showpost.php?p=51553238&postcount=430
[Upgrading, Modifying and Unlocking] ohad129:
Which is the latest rom for this device?
[Upgrading, Modifying and Unlocking] ohad129:
Still base 4.2.2?
[Upgrading, Modifying and Unlocking] Lovetz:
Yes.
[Upgrading, Modifying and Unlocking] ohad129:
Thx
[Upgrading, Modifying and Unlocking] Lovetz:
Yun OS 2.7.1-R1-20140331.2249

Source

Official FW 31.03.2014 for Zopo 9520 + root

Only English & Chineese interface language

Only with Yun OS you can use unlock gestures

Changelog:

1 is easier to pull down the notification bar : desktop anywhere in the gesture fell on it. One hand on the big screen is also operable ! Similarly, in the notification bar up gesture easily put away.

2 notification bar features more : a key to the lock screen , shutdown, restart. The others have .

3 Laboratory : There are some experimental features , very intimate .

- Into the lab : Type * # * # 98667 # * # * that * # * # yunos from the dial pad # * # *

- Toast information collection : fleeting information can also be back to check , such as call recording files and paths

- Notification bar can always switch between line and two lines for different tastes.

- Do not light up when a text message to the screen, you said the count !

- Want to light up the screen with the volume keys , power key provincial point of use , you can also configure.

- Application Bluetooth share : install their own applications , you can share it with others via Bluetooth , a very simple

4 Application to freeze , thaw. Temporarily unused applications , you can freeze it. Definitely not sneak up and steal traffic , stealing memory. Strongly recommended !

5 Each message can have a conversation signal count (n), when you delete a session to remind you there is also more .

6 Some users want a desktop slide can cycle : more options in a setting where you can find it!

7 There are some important optimization : contacts, dial pad , improved startup performance information !

Install in CWM/TWRP

Download from ya.disk
[Upgrading, Modifying and Unlocking] pjd64:
Today I received and installed the new firmware (20140329-161638) via OTA.

It seems something has changed for the better with the GPS, please see the attached picture.

I've never had all satellites in use before with the zp998 and, better yet, with a majority of them with SNR above 30 dB.

This morning I've seen some satellites with SNR above 40 dB, which is also a first with this phone.

Note: disregard the 0 seconds time for first fix on this screenshot. I had previously acquired a fix with "GPS Test".

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
It's a bit strange. Did you make any sw modifications? I flashed this ROM yesterday. My gps.conf contains mediatek's epo servers, regional time data server and google's supply host. Even so, I couldn't get fix for a few minutes. Even a little signal from any satellite. What's going on?
[Upgrading, Modifying and Unlocking] warezjunk:
GPS Solution (work around):

Buy a second hand BT GPS receiver (TomTom) or similar for about euro 20.

Use this for about 1 hour and then use internal GPS and problems are gone..

This receiver does the initial stuff to get a fix..

I used it for 2 ROM's and GPS works fine..(perfect)

For about euro 20 no more stress..
[Upgrading, Modifying and Unlocking] add_pl:
I use Motorola T805 external GPS, still my internal GPS isn't good.
[Upgrading, Modifying and Unlocking] Epsylon3:
look like Framaroot 1.9.1 doesnt works anymore directly as before

EDIT: oh, i see, its now like CyanogenMod, Super User Option in Security Settings
[Upgrading, Modifying and Unlocking] ippocampos:
Hi all..... I'm one step away from take this phone. Please tell me if it's worth to risk it. Is there any other issue except gps? What about the quality of mic and sounds? Thanks in advance!!!
[Upgrading, Modifying and Unlocking] pjd64:
No, I didn't do any software modifications. The only modification I had made before is described in one of my previous posts, where I had to disassemble the phone to install a new screen and I took the opportunity to pull up some of the contact pins in the antenna connectors, to try to improve contact and get a better signal.

I believe that it is admissible to have a wait time of minutes to get a first fix. After that first fix, if you switch off the GPS and turn it on again, how long does it take to have a fix again?

Regards,

Paulo
[Upgrading, Modifying and Unlocking] Take-kun:
Ok, so here I post all my observations about GPS performance.

First thing you've got to do is update phone to the newest ROM. I did it via flashtool, but it's probably available via OTA. DO NOT CHANGE ANY FILES. DO NOT TOUCH GPS.CONF. Do the test first and see if GPS works better. If not, read all the rest.

I've unscrewed my phone again and now I'm 100% sure which pins are responsible for GPS. Just remove your back cover and take a look for text in top-right corner, near to volume keys. Do you see it? As it's written, here is GPS and Wifi antenna. So the only pins that you have to lift up are under this place. Remove cards and battery. Unscrew the lower part with 3 screws (and lost guarantee), remove this cover. Then unscrew all the 11 screws you can see. Then get a flat screwdriver and try to remove all the plastic part. Be careful, because all the silver keys (volume, camera and power) will fall out now. In the corner I mentioned there are 3 pins, lift them all using flat screwdriver. You don't have to unscrew the motherboard. Be very careful and do not damage these pins. I lifted them to almost vertical position. Now get a look for a 11-screws cover that you removed. There is a place, that should be touched by pins. Try to stick them to it for a few times to make sure, that it will work well after screwing the phone.

All right, now we should screw it all. Here is the hardest point, you've got to replace your buttons. It was very hard for me, but after 10 minutes of practices I did it! Do you see these strange bellies on the buttons? Two on one of the borders? You've got to place them into the cover in correct position. They've got to be directed into the bottom of the cover. Place them all and make sure, that they don't stick out. Now take your phone and try to put it into the cover. Do it quickly, because keys may fall out due to vibrations. Now the only thing left to do is screw all, put the battery and cards and try if it works. First thing you've got to check is wifi. If wifi signal is extremely low, even after couple of restarts that means, that you've damaged pins. Repeat all the procedure and take a look for them.

If everything is all right now you can go outside and make the test. Without any changes in gps.conf, my Zopo get a fix in about 10 seconds with 3 satellites. After a few moments it got from 5 to 9 satellites, signal rate for each of them equals from 15 to 35. But I think it got a little buggy again. Gave me incorrect localization, fixed after a few moments. Maybe it was bad only for a first time. I still don't know how about working inside a vehicle. Probably I still need to have GPS Lock turned on. I think it's not as good as yours, so I'm bit worried that I damaged something :/
[Upgrading, Modifying and Unlocking] pjd64:
You are right regarding the placement of the buttons. Those are really tricky to put in place. What I do is I place the cover on a table with the buttons already in place. The buttons have only a correct way to be placed and thats when they really stick out of the cover.

After that, with the cover placed on the table in an horizontal position, I insert the phone frame (the front part with the screen) lowering it into the cover, first the difficult side (the one with the camera and power buttons) and finally I snap in the other side (the easy one with only one button, the volume).

You say that you are worried because you didn't get a signal as good as the one I showed on my previous snapshot from "GPS Locker"?

Worry no more. ;)

During the rest of the day, till now, I wasn't able to get such a good signal again.

Regards,

Paulo
[Upgrading, Modifying and Unlocking] ohad129:
Gps gps try waze
[Upgrading, Modifying and Unlocking] noflip:
Hello,

Can someone please advise if this problem appears with them as well? I am starting to think that the GPS issue should get its own Thread.
[Upgrading, Modifying and Unlocking] ohad129:
Can the zopo use other then vendor kernel?
[Upgrading, Modifying and Unlocking] Vard:
I am having same issue. And new FW does not solve this issue.
[Upgrading, Modifying and Unlocking] victorsrg:
Hi guys,

I opened the phone yesterday, see if loose contact was the issue. So far, I see little to no improvement so I guess the gps on this phone is just bad. Fix is generally fast but accuracy, even though it says 5 meters, is crap. Anyway, something I noticed and don;t quite understand, is that there are three antenna contacts, but only two of them have a metal plate. The other one seems to only have the yellow plastic. Can anyone confirm this is the same in every phone? In the picture, look at the right contact.

ht tp://i57.tinypic.com/2vtr71h.jpg
[Upgrading, Modifying and Unlocking] tommie.r:
I think it's good phone apart from the gps and headphones having crapy sound, i use sony MW600 bluetooth headset and there's no issue there, works fine. But if you use ordinary headphones a lot and need to use the gps it's a bad buy....
[Upgrading, Modifying and Unlocking] Lovetz:
The problem with external sdcard still here with TWRP. It`s not mount. Can you fix it?
[Upgrading, Modifying and Unlocking] michelinok:
Those how has poor gps reception and gyro problems should write to zopomobile....

More people write, more lucky to have another update (if the problem is sw...).

PS: Sorry for my english
[Upgrading, Modifying and Unlocking] tommie.r:
Yuo´re right.

Absolutely right, i will,,,
[Upgrading, Modifying and Unlocking] michelinok:
I've the same problems as you...did you find a solution?
[Upgrading, Modifying and Unlocking] Mawe79:
for me it works...which rom are you using?
[Upgrading, Modifying and Unlocking] fmotta:
Yes that is normal
[Upgrading, Modifying and Unlocking] lasslax:
I also noticed the 3 contacts and only 2 metal counterpart. I wonder if that would be the Ground? Also, if only 2 connector, how does it connect 2 antennas (WiFi and GPS) both? Then it would need 3 contacts at least. Confusing.
[Upgrading, Modifying and Unlocking] tommie.r:
Mail adress?

I found this mail adress on http://zopomobile.cn and i sent a mail...

peggy.zhu@zopomobile.com
[Upgrading, Modifying and Unlocking] Take-kun:
Ok, so another day to share my experiences with ZP998's GPS. Today it worked pretty nice, catches fix after AGPS update in 20 seconds using 3 satellites. After a few moments it gets up to 9 satellites. Signal rate is not the highest, from 13 to 27, but it doesn't lost it often.

I've got one bad issue, GPS was like in attached file for a few times in a row. AGPS update, restart gps module even reboot didn't give any result. When I turned off and on (not reboot) the device it worked. Strange, but true.

And according to someone's post, yes, the antenna got only 2 metal sticks and 1 non-metal.
[Upgrading, Modifying and Unlocking] noflip:
Unfortunately I did not. I installed a pretty neat application called Sensor Kinetics, which has visualization demo that shows a simulation of the phone rotating in the same direction it is actually rotated in real time. This way I could determine that the gyroscope is completely inverted when rotating it in all 3 axis (if I am holding the phone in my palm parallel to the ground and tilt it left, the screen shows an animation of the phone tilting go the right, etc).

The app is free. You can try it and advise if any of the sensors are inverted for you as well.
[Upgrading, Modifying and Unlocking] michelinok:
I've noticed something strange...

If i enter engineer mode, gps, and manually change the slp address, if i close the app and reboot, the field is restored to default value...

do someone know how to "save" changes?

Many thanks!
[Upgrading, Modifying and Unlocking] Epsylon3:
Yes, left and right is inversed in rotation vector, 4 directions in gyroscope, accelerometor is ok, and compass seems not calibrated
[Upgrading, Modifying and Unlocking] noflip:
Yup, pretty much same as with my phone.

Does anyone know a way that the values of the sensors can be edited? I tried finding a solution in Google, but the only thing that keeps popping out is a similar issue that users had with specific phone models, when android 2.3 was released and it does not help at all.

Can someone, who uses a custom rom (eg Fluffy's rom or Marsapa or something similar) advise if the phone works normally in applications like Google Sky Map?

If someone knows a way that the sensors can be edited it would help as well.
[Upgrading, Modifying and Unlocking] Epsylon3:
I already tuned that on open source devices, but its in source code, which create the library /system/lib/hw/sensors.*.so

but, i have seen config files on some devices, not familiar with mtk/china devices (closed sources)

sensors were not changed on the new march ota

here is the list of changed libs :

# modified: hw/bluetooth.default.so
# modified: hw/camera.default.so
# modified: libAGifEncoder.so
# modified: libClearMotionFW.so
# modified: libHEVCdec_sa.ca7.android.so
# modified: libJpgDecPipe.so
# modified: libJpgEncPipe.so
# modified: libMali.so
# modified: libMtkOmxVdec.so
# modified: libRS.so
# modified: libacdk.so
# modified: libaudio.primary.default.so
# modified: libbcc.sha1.so
# modified: libbcc.so
# modified: libbcinfo.so
# modified: libcam.camadapter.so
# modified: libcam.campipe.so
# modified: libcam.camshot.so
# modified: libcam.client.so
# modified: libcam.paramsmgr.so
# modified: libcam.utils.so
# modified: libcam_camera_exif.so
# modified: libcamdrv.so
# modified: libcamera_client.so
# modified: libcameracustom.so
# modified: libcameraservice.so
# modified: libchromium_net.so
# modified: libextsimap.so
# modified: libft.so
# modified: libgoogle_recognizer_jni_l.so
# modified: libimageio.so
# modified: libimageio_plat_drv.so
# modified: libmdnssd.so
# modified: libmfvfactory.so
# modified: libmtk_drvb.so
# modified: libspeexwrapper.so
# modified: libstagefright.so
# modified: libstagefright_soft_aacdec.so
# modified: libstagefright_soft_aacenc.so
# modified: libvcodecdrv.so
# modified: libwebcore.so
# modified: libwebrtc_audio_preprocessing.so
# modified: modules/ccci_plat.ko
# modified: modules/mali.ko
# modified: modules/wlan_mt.ko
#
# new files:
#
# libAppDataSearch.so
# libgames_rtmp_jni.so
# libgcastv2_base.so
# libgcastv2_support.so
# libjgcastservice.so
# libmicro_hotword_jni.so
# libmorpho_effect_library.so
# libmorpho_facesolid.so
# libmorpho_image_converter.so
# libmorpho_jpeg_io.so
# libmorpho_memory_allocator.so
# libmorphoalloc.so
# libpatts_engine_jni_api_ub.so
# libskin.so
# libskin_beauty.so
# libvcdecoder_jni.so
[Upgrading, Modifying and Unlocking] michelinok:
I was using marsapa rom until yesterday....same problem as stock.

Marsapa's rom are stock based roms.
[Upgrading, Modifying and Unlocking] Epsylon3:
this post could help : http://xdaforums.com/showthread.php?t=2445619

for the compass, a config file /system/etc/sensor/sensord_cfg_axis seems used (not present in our roms)

/system/bin # strings bmm056d | grep etc

/system/etc/sensor/sensord_cfg_axis

but the gyroscope is the MPU3050c

I see also for the compass (memsicd3416x) :

cat /sys/bus/platform/drivers/msensor/chipinfo

mmc3416x Chip

cat /sys/bus/platform/drivers/msensor/layout

(4, 4)

[+0 +0 +0]

[+0 +0 +0]
[Upgrading, Modifying and Unlocking] chris4184:
Hello everyone, I have a problem.I installed the update ota, my smartphone was rooted and after the upgrade I get written about that super su needs to be updated but it makes me update apps like titanium backup and tell me that the phone must be root. I lost root or not? can root with framaroot? thanks
[Upgrading, Modifying and Unlocking] m3n3chm0:
You can root it again using Framaroot 1.9.1 :good: Just don't upgrade Supersu once it's rooted from PlayStore. If you do it then you'll lose ROOT privilegies.
[Upgrading, Modifying and Unlocking] chris4184:
I using after update framaroot 1.9.1 but nothing.
[Upgrading, Modifying and Unlocking] m3n3chm0:
I guess you have already reboot it when framaroot asked you to do.. but try to reboot it again.. that worked for me, I had installed the new ROM from FlashTool.