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Latest Threads
Huawei Modem Unlock Code ...
Forum: Huawei
Last Post: akamps
08-29-2017, 01:17 PM
» Replies: 18
» Views: 41,354
iOS 10 Tips and Tricks
Forum: Apple Products and iOS
Last Post: Glines
05-16-2017, 05:43 AM
» Replies: 1
» Views: 3,820
Dell Inspiron 15 3521 - S...
Forum: Diagrams & Manuals
Last Post: vijay
12-10-2016, 01:46 AM
» Replies: 3
» Views: 53,097
Apple iPhone 7 & 7Plus co...
Forum: Apple Products and iOS
Last Post: vijay
12-08-2016, 08:55 PM
» Replies: 0
» Views: 2,248
Unlocked Huawei E5220
Forum: Huawei
Last Post: peterp78
05-29-2015, 11:36 PM
» Replies: 0
» Views: 41,243
Seven Common misconceptio...
Forum: Industry Talk
Last Post: admin
05-12-2015, 06:20 PM
» Replies: 8
» Views: 20,133
The second operating syst...
Forum: Industry Talk
Last Post: admin
05-05-2015, 08:47 PM
» Replies: 1
» Views: 5,449
Sony Ericssion K630 and V...
Forum: Sony Ericsson Hardware
Last Post: vijay
05-05-2015, 05:59 PM
» Replies: 0
» Views: 3,682

 
  Dell Inspiron 15 3521 - Service manuals and Schematics
Posted by: vijay - 12-09-2016, 03:52 PM - Forum: Diagrams & Manuals - Replies (3)

Notebook Dell Inspiron 15 3521 - Schematics. Version: 0.4. ( Compal LA-9101P )

Intel Chief River
Rev: 0.4
OAK 15" UMA/DIS AMD Mars Pro
Ivy Bridge(BGA) + Panther Point
2012-08-22



Attached Files
.zip   compal_la-9101p_r0.4_schematics.pdf.zip (Size: 2.64 MB / Downloads: 13)
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  iOS 10 Tips and Tricks
Posted by: vijay - 12-09-2016, 09:32 AM - Forum: Apple Products and iOS - Replies (1)

iOS 10 Tips and Tricks

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  Apple iPhone 7 & 7Plus common troubles and solutions
Posted by: vijay - 12-08-2016, 08:55 PM - Forum: Apple Products and iOS - No Replies

hi, I'm going to collect and post here something about iPhone 7 or 7plus troubles and solutions, from real life. Smile Stay with me

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  Unlocked Huawei E5220
Posted by: peterp78 - 05-29-2015, 11:36 PM - Forum: Huawei - No Replies

Hi to all on the forum -- I am new here -- My name is Peter P...

I have purchased a New "Unlocked" Vodafone Mobile Wi-Fi, [from china] Model R206, based on the Huawei E5220...
It is my intention to use this with my ASUS Transformer PAD whilst in Europe later this year...

I wanted to test the R206-unit before leaving Australia and inserted the voice/data sim card from my smart phone, which is with NodeMobile via YesOptusG3...

I have use the Vodafone WebPage to gain access to settings etc., which do not seem to be straight forward and awkward to find your way around. At one point I found a reference to enter a sim "Pin" in doing this I changed the pin of my sim to a new number this did not work  I was unable to finalise a connection...

After trialling several options changing SSID rerences etc., I chose an instruction to reset the preinstalled settings...
QUESTIONS: Does resetting re install Lock Key? and do I have to Unlock the device again?  Is there a better webpage available to to entre the units internal settings?   Regards & Cheers PeterP[Image: angry.png]

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Information Seven Common misconceptions about Cell Phone Repair
Posted by: admin - 05-12-2015, 05:13 PM - Forum: Industry Talk - Replies (8)

This article was published at eTechParts blog a year back. I'd like to post it here for reading. For complete article with comments and media please visit http://blog.etechparts.com/2014/06/24/7-...ne-repair/



Here at eTech Parts we hear a lot about the cell phone repair industry from the media and the Repair Community including how the general public perceives the repair industry. While we do everything we can to educate the Repair Community and advocate for high industry standards, there are still several misconceptions that consumers have about repairing iPhones, Samsung devices and other cell phones.


Based on feedback we received from the community, here are 7 of the most common misconceptions about cell phone repair. Share the following information with your customers to educate them on repair and help us to give the cell phone repair industry a good reputation! Share it on your Facebook page, Tweet it, and let the public know they can trust repair!

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  Huawei Modem Unlock Code Calculator Download V1 / V2 / V201(V3) All Version Supported
Posted by: vijay - 05-06-2015, 07:26 AM - Forum: Huawei - Replies (18)

Download the Huawei Modem Unlock Code Calculator for Windows that calculate V1 /V2 / V201 (aka V3) and Flash Code. This calculator can run on any Windows. Say thanks to original developer of this software if it's useful.

Software is tested, working and calculated codes are valid.



Attached Files
.zip   huaweicalc.zip (Size: 3.36 MB / Downloads: 677)
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Information The second operating system hiding in every mobile phone
Posted by: admin - 05-05-2015, 08:44 PM - Forum: Industry Talk - Replies (1)

This article was published in osnews.com on 12th Nov 2013, by Thom Holwerda. Please visit http://www.osnews.com/story/27416/The_se...bile_phone to read original text and comments.




I've always known this, and I'm sure most of you do too, but we never really talk about it. Every smartphone or other device with mobile communications capability (e.g. 3G or LTE) actually runs not one, but two operating systems. Aside from the operating system that we as end-users see (Android, iOS, PalmOS), it also runs a small operating system that manages everything related to radio. Since this functionality is highly timing-dependent, a real-time operating system is required.

This operating system is stored in firmware, and runs on the baseband processor. As far as I know, this baseband RTOS is always entirely proprietary. For instance, the RTOS inside Qualcomm baseband processors (in this specific case, the MSM6280) is called AMSS, built upon their own proprietary REX kernel, and is made up of 69 concurrent tasks, handling everything from USB to GPS. It runs on an ARMv5 processor.

The problem here is clear: these baseband processors and the proprietary, closed software they run are poorly understood, as there's no proper peer review. This is actually kind of weird, considering just how important these little bits of software are to the functioning of a modern communication device. You may think these baseband RTOS' are safe and secure, but that's not exactly the case. You may have the most secure mobile operating system in the world, but you're still running a second operating system that is poorly understood, poorly documented, proprietary, and all you have to go on are Qualcomm's Infineon's, and others' blue eyes.

The insecurity of baseband software is not by error; it's by design. The standards that govern how these baseband processors and radios work were designed in the '80s, ending up with a complicated codebase written in the '90s - complete with a '90s attitude towards security. For instance, there is barely any exploit mitigation, so exploits are free to run amok. What makes it even worse, is that every baseband processor inherently trusts whatever data it receives from a base station (e.g. in a cell tower). Nothing is checked, everything is automatically trusted. Lastly, the baseband processor is usually the master processor, whereas the application processor (which runs the mobile operating system) is the slave.

So, we have a complete operating system, running on an ARM processor, without any exploit mitigation (or only very little of it), which automatically trusts every instruction, piece of code, or data it receives from the base station you're connected to. What could possibly go wrong?

With this in mind, security researcher Ralf-Philipp Weinmann of the University of Luxembourg set out to reverse engineer the baseband processor software of both Qualcomm and Infineon, and he easily spotted loads and loads of bugs, scattered all over the place, each and every one of which could lead to exploits - crashing the device, and even allowing the attacker to remotely execute code. Remember: all over the air. One of the exploits he found required nothing more but a 73 byte message to get remote code execution. Over the air.

You can do some crazy things with these exploits. For instance, you can turn on auto-answer, using the Hayes command set. This is a command language for modems designed in 1981, and it still works on modern baseband processors found in smartphones today (!). The auto-answer can be made silent and invisible, too.

While we can sort-of assume that the base stations in cell towers operated by large carriers are "safe", the fact of the matter is that base stations are becoming a lot cheaper, and are being sold on eBay - and there are even open source base station software packages. Such base stations can be used to target phones. Put a compromised base station in a crowded area - or even a financial district or some other sensitive area - and you can remotely turn on microphones, cameras, place rootkits, place calls/send SMS messages to expensive numbers, and so on. Yes, you can even brick phones permanently.

This is a pretty serious issue, but one that you rarely hear about. This is such low-level, complex software that I would guess very few people in the world actually understand everything that's going on here.

That complexity is exactly one of the reasons why it's not easy to write your own baseband implementation. The list of standards that describe just GSM is unimaginably long - and that's onlyGSM. Now you need to add UMTS, HSDPA, and so on, and so forth. And, of course, everything is covered by a ridiculously complex set of patents. To top it all off, communication authorities require baseband software to be certified.

Add all this up, and it's easy to see why every cellphone manufacturer just opts for an off-the-shelf baseband processor and associated software. This does mean that each and every feature and smartphone has a piece of software that always runs (when the device is on), but that is essentially a black box. Whenever someone does dive into baseband software, many bugs and issues are found, which raises the question just how long this rather dubious situation can continue.

It's kind of a sobering thought that mobile communications, the cornerstone of the modern world in both developed and developing regions, pivots around software that is of dubious quality, poorly understood, entirely proprietary, and wholly insecure by design.

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  Sony Ericssion K630 and V640 Schematics
Posted by: vijay - 05-05-2015, 05:59 PM - Forum: Sony Ericsson Hardware - No Replies

Sony Ericsson K630 and V640 Schematics Attached. Included Component placement and Troubleshooting Manual as two PDF



Attached Files
.zip   K630_V640_Schematics.zip (Size: 4.99 MB / Downloads: 7)
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