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Discuss [WiFi] Problem - Isn't Ziphone fault. at the iPhone "2G" (Rev. 1) - Hackint0sh.org; Originally Posted by Z00L For you guys with the nasty No WiFI issue, here it ...
  1. #41
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    Quote Originally Posted by Z00L View Post
    For you guys with the nasty No WiFI issue, here it goes:

    http://www.iphonelinux.org/#update_3_19_08

    Cumps
    This didn't worked for me, it did change the address how ever but my WiFi stayed gray out. I completed the process without errors.


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    Please don't confuse everybody here with the NO WIFI thing, this isn't our problem. What we have is a totally different issue. We HAVE WiFi but we can't keep our connection running for more than some seconds due an apparently overheating problem with the WiFi antenna or something else.

    Now we are testing iBooter in order to find a solution.
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    Earlier in the thread, someone said something about the antenna (cable?) being fried. This may be the problem. Now I'm not an electronic engineer or anything but I do know that temperature affects conductivty. More heat=more resistance=less conductivity. So it is plausable that a bad antenna cable can cause intermittent signal if it does not conduct a signal properly when warm or hot. If I had this problem, I would happily test this outfor you guys. What I do know for sure is when the antenna cables are not connected, you have to be within a foot or so of the router to pick up even a weak signal.

    By the way, antenna cables are cheap. It's getting the phone open that is the real challenge. Any takers??

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    well im not sure this is a problem with just a cable because this problem make our phones to reboot constantly when you turn on the wifi this overheat the phone and make this happend i have post an url where you can see how to replace that part but unfortunately in my country is very hard to find that module

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    tomomx, I think this constant reboot is some kind of burn protection. Maybe when the iPhone reach a high temperature it reboots to avoid being fried.

    I recently discovered a software called iBooter that have a diagnostic tool that could maybe provide us with some usefull information about our WiFi status, I dind't try it yet.

    Another soft is iPlus: http://ipluspwns.com/
    :finder: Macbook Pro 2.2 GHz Santa Rosa (Leopard 10.5.7)
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    Hi guys,
    I had the same problem. Full connected to my wireless lan with iphone and laptop but no internet only in my iphone.
    Already tested your solutions but nothing worked for me.

    After that in my iphone i went to settings/safari and clear history, cookies and clear cache and enable Developer/ Debug Console. PROBLEM SOLVED Instantly

    Greets from Portugal
    Ricardo

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    Hey,
    Im a new poster but ive been following this for ages as my iphone has this low wifi signal and poor connectivity problem. I have an early USA model which was shipped with 1.0.2 and it was great until i went from 1.1.1 to 1.1.2.

    The problem seemed to start at this time but I dont believe it is a software problem as i have tried all available software versions and BBs.

    (I couldnt stand to be without my phone for any length of time when messing with it so I got another one which has been perfect.)

    I really want to get my other one sorted do I can recover some of the cash ive spent out so ive been looking into fixing it. Ive taken it to bits as ive a bit of knowledge of electronics and I have ordered this new antenna hoping that it will sort the problem out. I have noticed that there are 2 surface mounted capacitors on the antenna and tried to test them on the old antenna but cant get at them really. Has anyone looked into whether these have blown. Has anyone tried an antenna replacement?

    Will report back later this week.
    Last edited by MacMOC; 03-25-2008 at 07:38 PM.

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    For anyone interested. I have fitted a new antenna to my iphone and the problem has not gone away - still got weak wifi signal and poor connectivity. Maybe I should just sit next to my router for a bit longer!!

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    This thread is about the same issue:
    http://www.hackint0sh.org/forum/showthread.php?t=37284
    :finder: Macbook Pro 2.2 GHz Santa Rosa (Leopard 10.5.7)
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    These are some interesting tips about WiFi issues I found, and also it's included the intermittent WiFi problem that affects us:

    Information and Tips for No EDGE/WiFi/BT

    EDGE/WiFi/BT ISSUES



    There are multiple ways WiFi can be broken, and several different things to try.

    Sometimes the settings on the phone have gotten confused and turning things on and off will reset them. Other times, the baseband which controls the modem and WiFi has become corrupted. Other times, something may have happened with your bootloader, or at a very low-level that cannot be reset by software. In worst-case situations, you may have a hardware problem and need a new comm board.



    We are working on new solutions on an on-going basis, and will keep you updated as we find them.



    Here are different problems we've seen:

    1. IMEI unknow , ICCID unknow , WIFI shows : NO WIFI

    2. IMEI ok , ICCID ok , WIFI shows : NO WIFI

    3. IMEI 00499xxx , NO WIFI (greyed-out)

    4. IMEI ok , WIFI OK , but wifi can't find any AP

    5. IMEI ok , WIFI OK , can login every AP , but can't use more than 30 seconds , then wifi disappear (crash) then after 30 seconds , wifi will come back



    NOTE: If you are getting the error "invalid calibration data in device tree" you have a hardware problem, or a severe problem that cannot be resolved at this time. It is unlikely the solutions below will help. Either replace the comm board, or keep checking our site for progress.



    Things to try:

    1) Reset the phone settings. Go to Settings -> General -> Reset and choose Reset Network settings. Then put phone into Airplane mode, reboot phone, get out of Airplane mode, and try to find network again.



    2) Assign a specific IP to your phone, if you can get to your WiFi. Go to Settings -> WiFi -> Static and give your phone an IP that works for your router. Make sure your router is not filtering MAC addresses, or enter your phone's MAC address as an approved address on your router.



    3) Reflash the baseband. Use iLiberty+ for Mac or Windows. On Mac, click on Payloads tab, download the EDGE/WiFi/BT reflash, and click Free my phone, then re-boot phone and run the unlock again. On Windows, click on the Advanced tab, choose Reflash baseband to version 04.04.05_G, click back on Standard tab, and click Go for it, then re-boot phone and run the unlock again.



    4) Test the phone for heat problems. If phone has intermittent WiFi issues, and keeps rebooting, there may be something wrong that is heat-related. Put the phone in the refrigerator for 10 minutes, then see if the WiFi signal comes back or becomes stronger. If you determine that you have a heat-related problem, you can try replacing the antenna in your phone. This requires opening the phone, but may be a cheap solution otherwise. It may also be due to a bad battery.



    5) Assign a MAC address to your phone using the iBooter program. This program lets you access the phone's bootloader and set environment settings. See:

    http://www.iphonelinux.org/index.php/IBooter



    6) Restore the phone back to 4.6BL via test points. This is for people who downgraded their bootloader using ZiPhone. It is possible this may help, but we have one user who tried it and reported no success.

    7) Replace comm board. This is 99.9% certain to work for the invalid calibration error. Parts are available from iFixIt and they have a guide. If you are scared to replace the board yourself, contact Speedy at hackthatphone.com

    See:

    http://www.ifixit.com/Products/iPhone/105

    http://www.ifixit.com/Guide/iPhone/C...s-Board/105/8/

    http://www.hackthatphone.com



    8) Return the phone to Apple for repair. This assumes you are in the country where the phone was purchased and have service from an official carrier.



    9) Wait for a fix.
    :finder: Macbook Pro 2.2 GHz Santa Rosa (Leopard 10.5.7)
    :iphone 3G 8GB 3.0 - ultrasn0w unlocked
    www.osval.com


 

 
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