IOS DFU process

  This paper introduce the realization process of executive privilege code of specific iOS equipment. At first, i recommend two sites to attain informations about DFU. One is ‘The phone wiki’, another is ‘IPSWDownloader’. Now we begin to introduce the DFU knowledges as following three segments.

  

   What is DFU? DFU is an internationally accepted norms, it is supported by USB equipment driver. All USB device can be choose to support DFU norms. But the DFU work mode can not work together with normal USB mode. When the device entered DFU mode, the result of device description that returned by the driver will be changed. Like follow:

So we can just the device is under DFU mode via the device description.

What we can do under DFU mode? The DFU Standard name is ‘Universal Serial Bus Device Class Specification For Device Firmware Upgrade’. From the regular documents we can do some extra works. Such as : recognize, enum device, upload files, download files, command executes, etc.

 

The norms defines series of protocals and structs to realize the above functions. 

How the Apple device use DFU mode? iTunes through DFU and Recovery mode to into Restore Mode for all kinds of software and hardware restore operations. The ‘TheiPhoneWiki’ provids brief description of the process. 

  Now there are some IOS recovery software use DFU mode to complete data recovery. Such DataToUS MobiRescuer, drfone for ios, etc.

Great deals from DataToUS for Thanksgiving and Christmas festival.

  DataToUS company is growing up accompany with every customs, in order to welcome the Thanksgiving and Christmas festival, DatatoUS company will organize preferential activities to old and new customs. The concrete contents are as follows:

Content:
Data Trace Recovery normal:
Original price: $49.95  Promotion price：$39.95  read more  buy now

Data Trace Recovery Professional:
Original price: $69.95 Promotion price：$55.95  read more  buy now

Data Trace Recovery Unlimited:
Original price: $400 Promotion price： $300    read more buy now

DataToUS Card recovery:
Original price: $30.95 Promotion price：$25.95   read more buy now

DataToUS Format recovery:
Original price:$40 Promotion price：   $30      read more buy now

Date:
From 11/25/2013 to 1/1/2014


Warm wishes for you and your family at Thanksgiving, good health and happy growth to every children.
Most important of all, DataToUS company always connect your data and life!

Data Recovery software compatible with windows 8.1

    DataToUS Softwares,always following the trends of technology. When microsoft officially announced the release of Windows 8.1. We carried out timely and rigorous testing all our products. And good news for us that all our products compatible perfectly with the new version of windows. 
     
    Part of Windows 8.1 new feature:

    1. Change the start style. User can start the operator system to the metro UI or the traditional desktop.
    2. Better search function. Support global and more intelligent search with bing pageview.
    3. Built-in IE11.
    4. Better with screen display function. You can arrange multiple display to increase the use efficiency.
    5. Userd defined the metro UI. You can change the the color, size, background, and arrangement of Metro UI.
    6. Faster start speed.
    7. Improved windows store. It is not only improve the load speed but also increase the ease of navigation.
    8. Start menu comes back.

   
    Please try to experience our data recovery products to perfect your data and computer on your new windows.
    
     Free Trial : Data Trace Recovery
     Free Trial : DataToUS Card Recovery
     Free Trial : DataToUS Format Recovery

The Difference Between Full Format & Quick Format   

   Horrible experiences when your hard drive crash or reformatted by mistake, specially forgot to backup. All your sweet memory or import files no longer works. But don‘t panic, DataToUS Format Recovery can be useful to find them. DataToUS Format Recovery is able to restore files no matter quick format or complete format, or format twice.
   
    You may be asked how to format your hard drive ever before and puzzled by the selections: Quick Format and Full Format(sometimes called Complete Format). Understanding the difference of what you choose can be very important, directly effects the format time you spend on. So i will discuss the two options by Tech.

    Quick Format:
    You must know first that it doesn't really delete the data. It does't rebuild the file system. It only erase the data index(address table). All really data still in the data area. Although your are not familiar with file system and address table, but you should know that format recovery software can find your lost files.

    Full Format:
    On the other hand, we have a full format, it will erases all bookkeeping information, attempt to mark and fix the bad sectors, reallocate the cluster and track, etc. But in the case we can use raw scan to find your lost files.

    Now if you encounter the following case, why not try to recover them.
    
  • Windows asks Do you want to format this drive?
  • Operating System not found
  • Invalid or corrupted FAT
  • Cannot find file or program
  • Invalid command
  • Hard disk failure
  • Non system disk
  • Disk error

  DataToUS Format Recovery 3.5 download site:
  http://www.datatous.com/downloaddetail.php?id=560


                                                                 DataToUS Tech
                                                                                       

  What is Deleted Files?

   When a file is deleted from a Windows computer the record for that file in the file-system index (the FAT or MFT) is marked to show that it is a deleted. The clusters on the drive where the data for the file is stored are now considered unallocated (i.e. available for new storage). At this point in time, the deleted file can easily be located by reading the file-system index record, locating the list of deleted files, and going to the clusters to recover the data.

   However, continued use of a computer after a deletion will lead to new data being written to the hard drive. If new data is written to the drive it is possible that:

· The record in the file-system index is re-used for a new file. If this happens, the original file name is overwritten and destroyed as the file name is only stored in the index and not with the file data;

· One or more of the clusters used to store the original file could be re-used for new data. If this happens, the original file content could become corrupt or totally overwritten and destroyed.

   It is for this reason that following a deletion or loss of files, use of the hard drive should be kept to a minimum to avoid new data being written to the drive and to maximize the possibility of recovery.

  Data Trace Recovery is the solution for the above description.
  Download site:http://www.datatous.com/download.php?sid=547
                                                                              
                                                                                        DataToUS Tech
                                                                                  www.datatous.com
                                           

What causes data loss?

There are many factors that contribute to data loss. Natural disaster, computer virus, data corruption, computer crime or human errors are examples that may result in the data loss. Typically, one of more of the following symptom may appear:

·         BIOS could not detect the hard disk drive

·         "Operating system not found" error

·         Power surges result in "no disk drive found" error

·         Strange clicking or grinding noises from hard disk drive

·         No normal spinning action from disk drives

·         Missing folders or files without reasons

·         Accidental deletion, format or fdisk

·         Natural disasters due to fire, water, crash

·         Files and folders cannot be accessed and more..

We make a survey on the website, you can participate in it.
http://freeonlinesurveys.com/s.asp?sid=jw642fde29r09zy287643