Question about HP iPAQ H5555 Pocket PC

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Data missing - Ipaq model HP5555 - did not do hard reset

Removed Ipaq from charge stand last night almost fully charged, backup battery at 100%, put in Ipaq carry case. Took out of case this morning. Orange light next to on/off switch displayed steady orange and all memory missing. Plugged into charge stand but had to do soft reset to restart. Unknown if backup battery was dead or not. How can data be retrieved? If not easily, recommend data recovery service we can have recover data. Data not fully backed up elsewhere.

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Hello,

I'm sorry but the HP Ipaq 55xx series store data on a volatile ram based memory. Unlike a nand flash (like usb sticks, memory cards etc) this memory will hold data only as long as it's powered on. If your main battery gets empty you should still be able to retain your files for some 10-20hrs with the backup battery (if it's ok itself and not depleted). After this time the power to the ram memory is cut off and all data is lost.
The problem you face is somewhat related to that backup battery, as it appears it's unable to do it's job and maintain the power to the ram memory at least some 10 hrs. You should have that battery replaced.

There is no way to recover the data from the ram memory as it is stored as an electric charge over some memory cells in the ram chips. When there is no power, these charges dissipate and the pattern is lost.

I'm sorry for having to give the bad news.
Bogdan

Posted on Jul 04, 2009

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How to nulock sony xperia s lt26i


solution 1, Hard Reset SONY XPERIA S LT26i with Software Menu :
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  2. Turn on SONY XPERIA S smartphone
  3. Don't forget to backup all important data
  4. Go to menu: Setting > Backup & Reset > Factory Data Reset > Reset Phone
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  6. The SONY XPERIA S will continue the step until ready to use in clean factory default.
solution 2, Hard Reset SONY XPERIA S LT26i with Flashtool applications:
  1. Flashtool in the applications from Sony can be download from Sony website.
  2. Flashtool software need to installed in you computer and ready with USB data cable
  3. Make sure SONY XPERIA S battery is charge properly or full charge
  4. Power off SONY XPERIA S
  5. Boot SONY XPERIA S to flashmode with using: Volume Down Button and connect to USB cable at No.1 above
  6. Follow the menu at you computer display, it is easy to understand the steps.
solution 3, Hard Reset SONY XPERIA S LT26i with Hardware Key Button:
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1 Answer

IPaq rx3115 working like PC not Pocket PC, need to plugin always


You need to purchase a new removable battery for your RX
The removable batts usually only last about a year (like cell phone batteries).
Although it is showing 100% charge, the battery is not storing enough power to run the ipaq

The rx series uses 2 batteries, one is the removable one u can see/access when u remove the back cover. The other batt is a small round batt which stores the basic info for your system (so you don't lose your data when u swap out the removable battery).

This small (backup) batt is similar to the cmos battery on a laptop or pc.
You cannot easily replace this, as the unit needs to be disassembled to access this batt.
If you are tech-y (and brave), the replacement button batteries are sold on ebay for $9-12

Normally, if your removable batt is bad, you could still use your unit plugged in, and could
remove from AC power without losing data. Not the case if your replaceable batt is exhausted.
When both batteries are bad, you lose everything when u remove unit from AC power.

My workaround without having to disassemble unit:
Purchase and fully charge new removable batt (They have huge capacity ones available for like $15 - better than the original !).
Load up all your programs & settings the way you like.
Perform full backup to SD card (& also on PC via active sync - to be safe)
Now the only time you should lose your data (like hard reset) is if you allow the battery
to completely drain, in which case you can restore your backup.
If you purchase 2 removable batts, you can easily swapout without losing data if you
use the usb charge cable & leave ipaq plugged in while you change battery

Hope this helps






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Hi, Jim--
When you take the battery out of an IPAQ you're performing a hard reset. I've got 4 different IPAQs and it does the same thing on all of them.
My solution was to back the IPAQ up using the internal backup program (back up to IPAQ storage) and then replace the battery, then restore the last backup.
Saved me a heck of a lot of time. It's been hard to remember to back up everytime I add a program or change data majorly, but it's probably the best thing to do.

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1 Answer

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It cannot switched the batteries. The backup one is a small internal battery just to keep the CMOS with data. That's it.

If you main battery is not charging or when unplugged won't power on, the is likely the main battery is defective, or the charging circuitry of it is failing.

Best regards,

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Most of your data (phone directory, calendar etc) is stored your pda's ram. If your LiON battery runs flat , the pda wont start up, your backup battery kicks in to preserve the data. If your NiMH battery runs flat, you will loose all data in the phone or the equivalent of a hard reset.

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That's a very odd scenario. Have you tried putting it on the cradle without the battery? One possibility is that it was an incorrect battery that you put into it and it somehow fried the PDA. That's however very unlikely. Have you tried putting your old battery in it?

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If you are not using the original chargers it could be the type of charging cable. Not all cables that fit will charge the device correctly.

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Charge it overnight then do a hard reset... You will lose any data or files that you have added, but if a hard reset doesn't fix it, you should return it to HP...

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