Difference between pages "JTAG Huawei TracFone M865C" and "SuperFetch"

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== JTAG Huawei TracFone M865C (Ascend II) ==
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{{Expand}}
  
This phone is supported by the Cricket Network and Tracfone. This uses a Qualcomm 7627 600 MHz (S1) Processor and comes standard with Android version 2.3. This phone is unsupported by RIFF Box for the JTAG process for resurrector.
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SuperFetch is a performance enhancement introduced in [[Microsoft]] [[Windows|Windows Vista]] to reduce the time necessary to launch applications. SuperFetch works with the memory manager service in Windows to analyze memory usage patterns over time to determine the optimal memory content for a given user for a date or time of day. This differs from the [[Prefetch]] technique used in Microsoft Windows XP, which preloads data into memory without analyzing usage patterns.
  
{| border="1" cellpadding="2"
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From [http://msdn.microsoft.com/en-us/library/windows/hardware/dn653317(v=vs.85).aspx]: SuperFetch prioritizes the following kinds of pages to remain in memory:
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* Pages of applications that are used most frequently overall.
| [[ File:huawei-tracfone-m865c-front.jpg | 200px ]]
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* Pages of applications that are commonly used when resuming:  
| [[ File:huawei-tracfone-m865c-back.jpg | 200px ]]
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** After extensive hibernation (for example, first thing in the morning).
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** After shorter periods of sleep or hibernation (for example, after lunch).
|}
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If SuperFetch detects that the system drive is a fast SSD (as measured by Windows Experience Index Disk score), then SuperFetch turns off [[ReadyBoot]], [[ReadyBoost]], and the SuperFetch service itself.
  
  
=== Getting Started ===
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== Configuration ==
  
What you need:
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Because SuperFetch appears to leave a system with no available memory, some users turn it off to create the appearance of having more free memory. The feature can be configured by changing the <tt>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters\EnableSuperfetch</tt> [[Registry]] key [http://www.codinghorror.com/blog/archives/000688.html]. A value of zero disables SuperFetch, one enables it for booting only, two for applications, and three for both applications and boot. This setting can also be changed using the Services console, <tt>services.msc</tt> [http://tiredblogger.wordpress.com/2007/03/27/superfetch-not-so-super-for-gaming/].
  
# Riff Box
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== File Formats ==
# USB to Micro USB cord
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Data for SuperFetch is gathered by the <tt>%SystemRoot%\System32\Sysmain.dll</tt>, part of the Service Host process, <tt>%SystemRoot%\System32\Svchost.exe</tt>, and stored in a series of files in the <tt>%SystemRoot%\Prefetch</tt> directory [http://www.microsoft.com/technet/technetmag/issues/2007/03/VistaKernel/]. These files appear to start with the prefix <tt>Ag</tt> and have a <tt>.db</tt> extension. Note that there are likely more SuperFetch database files named differently, presumably all using the .db extension.
  
=== NAND Dump Procedure ===
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The format of the SuperFetch database files is not fully known, there is available unofficial partial specification [http://blog.rewolf.pl/blog/?p=214] and open source (GPL) dumper for .db files [http://code.google.com/p/rewolf-superfetch-dumper/]. For more information see [[X]]
  
# Disassemble the phone down to the PCB.
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The SuperFetch feature is seeded with some basic usage patterns when the operating system is installed [http://channel9.msdn.com/showpost.aspx?postid=242429].
# Connect the RIFF box to the PC via USB.
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# Connect the RIFF box to the PCB via the JTAG pins.
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# Connect the PCB to a Micro USB cord and power via a power supply.
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# Start the "RIFF box" software.
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# Power the PCB.
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# Dump the NAND.
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The TAPS are located under the battery, behind the Huawei phone label.  The phone will be powered by a Micro USB cord from an AC battery charger.
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== See Also ==
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* [[Prefetch]]
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* [[ReadyBoost]]
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* [[ReadyBoot]]
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* [[Windows SuperFetch Format|SuperFetch Format]]
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* [[Windows]]
  
The TAPS order is as follows:
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== External Links ==
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* [http://en.wikipedia.org/wiki/Windows_Vista_I/O_technologies#SuperFetch Wikipedia: Windows Vista I/O technologies - SuperFetch]
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* [http://channel9.msdn.com/showpost.aspx?postid=242429 Channel 9 Interview with Michael Fortin of Microsoft on SuperFetch]
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* [http://www.informationweek.com/news/showArticle.jhtml?articleID=196902178 Microsoft Predicts The Future With Vista's SuperFetch] from Information Week
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* [http://jessekornblum.com/presentations/dodcc08-2.pdf DC3 Presentation: My You Look SuperFetching], by Jesse Kornblum
  
# 1=Not Used
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== Tools ==
# 2=TCK
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=== Open Source ===
# 3=GND
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* [https://code.google.com/p/rewolf-superfetch-dumper/ rewolf-superfetch-dumper]
# 4=TMS
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# 5=TDI
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# 6=TDO
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# 7=RTCK
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# 8=TRST
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# 9=NRST
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[[Category:Windows]]
{| border="1" cellpadding="2"
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|-
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| [[ File:huawei-tracfone-m865c-taps.jpg | 600px ]]
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|-
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|}
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For the TAPs, the Huawei-8650 was utilized, pictured above. The TAPS on the M865C are located in the same location as the 8650. See below for TAPS locations.
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{| border="1" cellpadding="2"
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|-
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| [[ File:huawei-tracfone-m865c-soldered-taps.png | 600px ]]
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|-
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|}
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After the wires are connected to the board, the phone is powered by the USB connection. Plug the Micro USB into the USB connection on the device and then plug the phone into a wall outlet. The phone should respond with the vibrator switch activating for less than a second.
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Launch the Riff Box JTAG Manager and use the following settings:
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* JTAG TCK Speed = RTCK
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* Resurrector Settings= Huawei U8650
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* Auto FullFlash size
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{| border="1" cellpadding="2"
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|-
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| [[ File:huawei-tracfone-m865c-riff-settings.jpg | 600px ]]
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|-
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|}
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Advanced Settings:
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* Ignore Target IDCODE during Resurrection and DCC Loader operations
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{| border="1" cellpadding="2"
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|-
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| [[ File:huawei-tracfone-m865c-riff-advanced-settings.jpg | 600px ]]
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|-
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|}
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Then connect and get the ID, you should receive the dead body signal. Then read the memory.  JTAG complete.
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=== Notes ===
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The phone has a 512 MB NAND flash memory chip which should take approximately 30 minutes to download.
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=== References ===
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*http://www.phonescoop.com/phones/phone.php?p=3308
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*http://www.riffbox.org/
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Revision as of 04:27, 24 April 2014

Information icon.png

Please help to improve this article by expanding it.
Further information might be found on the discussion page.

SuperFetch is a performance enhancement introduced in Microsoft Windows Vista to reduce the time necessary to launch applications. SuperFetch works with the memory manager service in Windows to analyze memory usage patterns over time to determine the optimal memory content for a given user for a date or time of day. This differs from the Prefetch technique used in Microsoft Windows XP, which preloads data into memory without analyzing usage patterns.

From [1]: SuperFetch prioritizes the following kinds of pages to remain in memory:

  • Pages of applications that are used most frequently overall.
  • Pages of applications that are commonly used when resuming:
    • After extensive hibernation (for example, first thing in the morning).
    • After shorter periods of sleep or hibernation (for example, after lunch).

If SuperFetch detects that the system drive is a fast SSD (as measured by Windows Experience Index Disk score), then SuperFetch turns off ReadyBoot, ReadyBoost, and the SuperFetch service itself.


Configuration

Because SuperFetch appears to leave a system with no available memory, some users turn it off to create the appearance of having more free memory. The feature can be configured by changing the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters\EnableSuperfetch Registry key [2]. A value of zero disables SuperFetch, one enables it for booting only, two for applications, and three for both applications and boot. This setting can also be changed using the Services console, services.msc [3].

File Formats

Data for SuperFetch is gathered by the %SystemRoot%\System32\Sysmain.dll, part of the Service Host process, %SystemRoot%\System32\Svchost.exe, and stored in a series of files in the %SystemRoot%\Prefetch directory [4]. These files appear to start with the prefix Ag and have a .db extension. Note that there are likely more SuperFetch database files named differently, presumably all using the .db extension.

The format of the SuperFetch database files is not fully known, there is available unofficial partial specification [5] and open source (GPL) dumper for .db files [6]. For more information see X

The SuperFetch feature is seeded with some basic usage patterns when the operating system is installed [7].

See Also

External Links

Tools

Open Source