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Some of you might remember me from back in the day of the 800w. Well, I recently picked up a Pre, and started playing around with it.
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Similar to the 800w, the Pre lacks some GPS functionality out of the box. I was not really impressed with the acquisition times, the accuracy, or the speed of updates with the Pre's GPS. I figured I was able to enable a lot more functionality for the 800w, so I'd give it a shot with the Pre.: Z) l; W! E; X; {" W
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The process is essentially the same for the Pre as it was for the 800w. Because I'm lazy, I'm going to go ahead and reuse my walkthrough.
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8 F* U$ Z- R& Z/ x# NThe Pre, stock, seems to have pretty typical aGPS Satellite Acquisition times (at least in my experience) of around 30 seconds to 2 minutes, depending on conditions.
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! i; E2 F+ _( _6 OI believe I have discovered a way to reduce this time. Additionally, it appears (from my quick tests) that this enables true standalone GPS.5 U6 f6 ~2 G7 o% Z# |) A( J$ Y/ V
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This is not an easy hack, so for those who aren't phone savvy, be aware that you will be using some incredibly powerful tools that can literally destroy your phone beyond repair.- m9 w) P) j1 E& \! q, e! w
. [ U# a7 H5 c* j rThat being said, if you follow the simple instructions, then you should be just fine.6 X$ y. g9 g( Q4 j( ?
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) H8 I0 l" g9 j8 P! U( PThis involves several tools, none of which are mine. (There's a change!): n, v5 `- o. g% z
! b% w/ k' `/ @; KNote: The directions below have changed and are now simpler and even easier to follow! You can safely ignore any steps that have a strikeout through them. I've left them in there to assist users who want to attempt a more advanced approach.3 E9 O) S @' R# b0 N6 t; r2 K$ ?
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Tools Needed:- beezlewaxin's 800w/Centro/Pre Diagnostic Driver
- QPST -- As this is a Qualcomm program, I will not post or link to it here. I used QPST 2.7.323 (or "QPST 2.7 build 323" as it is sometimes called) for this. (Hint: Google is your friend.) (Bonus Hint: Be careful of viruses if you are downloading from random servers.)
- The Palm SDK. (Alternatively you can use novaterm.)
- Your SPC/MSL code. I simply called Sprint, selected the option for tech support, kept drilling down until I got a tech, and asked for it. I told him that I needed to do a factory (also known as an RTN) reset. He happily provided it to me. If they question you about it, you can tell them that you need to reset it and have all the instructions in front of you, you just need the MSL.
- A normal MiniUSB sync cable.
- Your Pre.
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That's an intimidating list I know, but it's really much simpler than the list might imply.
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" u) w: P! l) z RTo apply the hack:- Install QPST.
- Install the Palm SDK. (If you are using novaterm you can skip this step.)
- Connect your phone to your PC, make sure you have a good connection.
- On your phone, enable developer mode. This may require a restart.
- Open a command prompt window (Start -> Run -> CMD). (If you are using novaterm, run it, connect, and skip the next two steps.)
- Browse to the Palm SDK installation folder (Default: C:\Program Files\Palm\SDK\bin)
- Run: novacom -t open tty://
- At the root@castle prompt, enter: mpt 0d
- Bring up your dial pad in the Phone application.
- Dial ##USBPASS# (or ##8727277#) to enter the "USB Passthrough Control" menu/application (This is the equivalent of the mpt command).
- There are four USB "ports" available, on the second USB port assign DIAG. (Note: this will disable internet on the phone until you've disabled this.) You will be prompted for your MSL. Thanks to Thibaud for his sharp eyes in spotting this!
- You should be prompted for several (two) hardware installs. Both times point the installer to the location where you placed beezlewaxin's Diagnostic Driver.
- Once installed, run QPST Configuration.
- Click Add New Port...
- Here you will see a list of comm ports. Don't worry about most of these, the one we want is labeled USB/QC Diagnostic. If you see more than one, that's okay, just add all of them (I had two).
- One of the comm ports will list a phone. Mine displayed SURF6800-65. Simply make a mental note of the comm port number for this one.
- From the QPST tools, launch QPST Service Programming. (Warning: This is an incredibly powerful tool, and it has the capabilities to completely brick your phone, rendering it useless. If you do not know what something does, don't touch it! webOS Doctor cannot fix anything you break in here.)
- Make sure that your phone is selected, and click OK.
- Click the Read from Phone button. This is where you will enter your MSL/SPC code.
- Browse to the gpsOne tab.
- Check the following boxes:- B& n/ Q j8 [- V6 H1 `* [$ |
Assistance-Cartesian
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# v4 N& Y9 P3 j& v$ e, @GPS Almanac
/ k, c7 V5 ~# i% V7 cGPS Ephemeris
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GPS/AFLT Hybrid% V$ V6 u/ F# i% C- S J6 t2 z
' k; a/ p8 ?( w! m Z0 k% W) rThe Allowed and Assistance-Spherical boxes should have already been checked. (Screenshot below is of original/factory settings.)
: C, E! G9 r+ L# V ]% a; d - Enter the following settings:$ J: K5 K; s: g+ r% p7 O. @# _
(Note: different settings for different carriers)
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PDE IP Address = 68.28.31.49
! r' }/ ~+ Q+ rPDE Port Number = 50172 e, _8 T5 S& l' E* C! l0 @
PDE Transport = IP; r6 q: _5 Q- S5 M @
Position Calculation = PDE |
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PDE IP Address: 206.47.201.751 V) K$ b# F' X+ f1 j, l' Z
PDE Port number: 8888
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Position Calculation: Mobile |
- Double check that you didn't change anything you weren't supposed to!
- Click the Write to Phone button. (Note: You may be promoted for your MSL/SPC code again.)
- Soft reset your phone.
- Enjoy your GPS!
, j3 m6 `! a$ D9 N原贴地址 － http://forums.precentral.net/pal ... ssisted-cached.html
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我打算明晚试试，据回复效果不错！
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发表于 2009-10-28 22:33
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