Hi Guys

I have the PIPO M9 PRO 3G / WIFI tablet and Im looking for an answer to the WIFI problem dropping all the time.

Can any one confirm if the latest firmware solves the problem or has it been confirmed (in this post) that the antenna is faulty ie hardware problem??

I don't want to open up the tablet for fear of breaking the warranty its only 9 weeks old and this should not be the solution for a 9 week old tablet.

I must say Im disappointed with this piece of kit. Not only wifi problems but a serious lag in between screens and when internet browsing. I thought the quad core would make it fly but mine is sluggish.

Ive got September's firmware on my 4.2.2 and have not upgraded to latest firmware on PIPO website which I assume is this

20131011_sms_M9pro_update.img

Can anyone help me out or offer any advice to my problems?

Thanks in advance

Hi everybody,

I confirm that the Wifi issue is due to the bad position of the antenna in the tablet as Zizou said.

As it is placed by default it can not work properly for the three following reasons:

- Actually an antenna has to be in the air to work but in this tablet it is stuck with metalic tape to the back of the LCD screen wich is connected to ground.

- Furthermore the aluminium back of the tablet makes a Farraday cage which compromise the antenna reception.

-Finally, a strip antenna has to be flat to work, in my case it was stuck on the plastic part where the top-right LCD screen's screw is fixed in so it was not flat at all.  

To fix it you have to open your tablet, unstick the Wifi antenna very carefully and re-stick it on a piece of paper or cardboard. After that you have to place it far from metallic parts. Some people place it on the top right corner but as the shape of the aluminium back is larger in the corners, I decided to place it on the right side of the 3G chip because this part is covered buy the plstic part of the back when the tablet is closed.

I can tell you that now the Wifi never disconnects and baudrate is good. We are about 10 people to make this fix on the french forum http://tablette-chinoise.net/pipo-m9-pro-problemes-wifi-coupures-ralentissement-t2648 and we have all solved the problem.

Notas:

- Modifying your router settings may improve your Wifi but not solve the problem.

- Firmware updates won't solve it because it's a hardware issue (Actually a building process)

- It is normal to have short circuits in DC mode on a Wifi antenna because both parts of the cable are connected on a square piece of copper: it is a strip antenna tuned to be efficient at Gigahertz. If the cable looks good, don't replace it by two separated wires.

Regards.

Hey Everyone!

So, like many of you I've been searching for a solution to the poor WiFi reception on the M9 Pro. I'm currently running 'Finless 1.4' from Freaktab. This ROM has a WiFi power modification built into the code, and does offer some improvement.

Last night I found this thread, and after reading through the posts, including ones outlining how to modify the antenna itself, I decided to pop my Pipo open and see what difference it made. As robulle stated, the Aluminium back seems to be causing the majority, if not the entire problem with the poor signal.

So, I figured, ‘Who needs an Aluminium back, anyway?’

Here’s a photo of the basic mod. I used a heat-gun (which seemed to have little effect, but definitely helped) to loosed the glue between the aluminium and the plastic frame. I then used a spudger (kitchen butter knife, thanks xocolocoxoco for the tip ) to slowly prise the Aluminium from the frame.

The improvement is astonishing! And, if you’re careful, involves little risk as there is no electronic modification at all!

I know it looks like a “Frankenstein Tablet” at the mo, but I’m going to hunt for some thin plastic sheeting that I can cut to the same shape as the aluminium and glue in place.

I hope this helps!

MikusP

It's crazy, I know. But it totally works. The range is amazing! The speed has definitely improved and the connection never drops. I'm going to try the WiFi antenna mod tomorrow too, so, that should totally firm things up.

Here's a shot of the custom back cover...made from a box file. hah ;D

xocolocoxoco said
Good news? I do not know, but I risked. Do it for your own account.
So...

I used to open my tablet with it. It is one kitchen utensil that is used for buttering bread. I sharpened the tip on a grinding wheel.

http://imageshack.us/photo/my-images/440/a1k9.jpg/

The wires do not appear to be short.

http://imageshack.us/photo/my-images/33/2ht1.jpg/

But even so I took it out.

http://imageshack.us/photo/my-images/855/lsxu.jpg/

And did the welding with two individual wires. I recommend using a wired USB cable that will not be useful. Because it has thinner wires.

http://imageshack.us/photo/my-images/856/mwd1.jpg/

I used this paste, is a solder paste. It's great to work with solder. But be very careful, because the smoke that loose is corrosive. Use the minimum of the minimum possible.

http://imageshack.us/photo/my-images/542/pw6v.jpg/

That done, clean! Wipe only where welding was used. Take care with the cloth too, as it can cause electrostatic and take the risk of damaging a component.

http://imageshack.us/photo/my-images/11/5ioc.jpg/

Ready! Now put the tape in place and mount your XINGLINGYOUNG

http://imageshack.us/photo/my-images/577/ys7s.jpg/
 
Here's a video after that. I have three routers. Two left in the business, and another one is LINKSYS is INTELBRAS (is a reputable company here in Brazil). And the other who stays at home is a INTELBRAS too.
https://www.youtube.com/watch?v=VjeGScm_15M
I have not tested the quality of the wifi and it worked. This video I did then so I finished the job.

zinzo said

xocolocoxoco said

zinzo said
I had the same problems with wifi and I solved by changing the settings of my router tp-link, I changed the bandwidth of the wifi channell from 20/40 MHz to 20MHz and wifi problems are gone. It is clear that this solution is only valid with the router with 802.11n if you have any problems with the 802.11g standard try to change from short to long preamble.

as it is, I still believe it is firmware problem. Will be complicated because everywhere I go (friend's house or hotel) I will have to change the settings.

 

when I am outside the house I use the PIPO m9 pro 3g connection or cell phone

 All..I did this solder trick and ta daaaaaaaaaaaaaaaaaaaaaaaa

 NO MORE connection lost...repeat NO MORE Wifi lost.....pffff