The problem is not the glyphs thing, it is because there is a safety switch built into the AVIC to reset to factory WinCE state when a reset occurs. This is the case whenever you boot into Testmode, and sometime when AVIC detects something unusual.

 

So even if you overwrite the default font files with new ones, WinCE still reverts to factory condition when reset occurs.

If this is the case then what happens when someone upgrades their firmware? Shouldn't the firmware upgrade to the unit be lost during the reset?

 

If this is the case then what happens when someone upgrades their firmware? Shouldn't the firmware upgrade to the unit be lost during the reset?

Upgrade to the FW is a different story, and it is not done within TestMode. Modifications done within TestMode is only temporary written to the user-modifiable Flash memory (Not the WinCE Flash ROM).

In the other hand, the FW upgrade will require to enter the internal Flash ROM programming mode, to physically alter the internal Flash image of the WinCE OS.

So when your AVIC detects that there is something not right (unsuccussful boot as an example, or get into TestMode also provokes a reset to default), it will revert to factory settings by loading the WinCE OS image again to the user-modifiable Flash memory, or by resetting user changes made to the system.

I'm gona install dealeay timer so when ever key goes in to on position avic get power 1minute even key turns off or start..this way avic can finish boot so nomore reset anymore.

I ordered timer and I'll soon install it I'll keep youguys updated..

I'm gona install dealeay timer so when ever key goes in to on position avic get power 1minute even key turns off or start..this way avic can finish boot so nomore reset anymore.

 

I ordered timer and I'll soon install it I'll keep youguys updated..

Where do you get the power if the key is turned to OFF right away?

Are you going to connect to the battery directly to get power?

there is memory power at the connection this one has constant power regardless of key position.

I use acc as switch so whenever key goes acc it gets at least 1 min power either key goes to off or on or start.

only down side is this way other ACC devices or outlets will get power too.but I think there is almost 0 ACC powered device on my car. or I can simply install diode to prevent backflow.

otherthing is I don't know if AVIC will keep boothing with craking voltage drop.

well still it'll reduce number of resetting siginificantly.

I ordered timer on ebay.

I'll post result but will be anoter two weeks to get the timer on hand.

Got it! But you might have trouble when cranking the car to start because of the voltage drop ... I don't know for sure though.

After all, what are you trying to achieve? Do you have the F500 or F700 or F900 unit?

I have a X710 unit and I don't have the reset-and-go-back-to-square-one problem.

don't worry car battery should hold more juice to handle both .hh

I have a f700.

I

 

I have a f700.

Then you shouldn't have the font resetting problem, except when you enter the Testmode.

what?

f700 have ssme ressting problem.if the power is interupted in certain period of booting it resets to factory defaults.

I thought this is same problem on all avic 700 900 90.maybe 500.

what?

 

f700 have ssme ressting problem.if the power is interupted in certain period of booting it resets to factory defaults.

 

I thought this is same problem on all avic 700 900 90.maybe 500.

I got a X710 that is a replicate of the F700 with FW 3.0. I got this lost font problem maybe 2 times every 3 months, no big deal, problem during unsuccessful booting (interrupted like you said). But is it worth that battery backup electronics?

I doubt so! I just reload the font with Testmode.

finally sucessfully installed dealey timer.

now anytime avic start boot up it'll have 1 minute to finish booting.

but looks like when I crank the engine voltage drop is too big avic can't continue booting.but bigger battery might help.

anyway now I can turn the key to close the window and turn off right away and avic will still finish the booting so I don't have to install the font again.

the kit I order from ebay was not suitable for my needs so I had to build from scratch.I use general NE555 timer circuit with relay.

I think this is not the perfect solution but sure it'll reduce the chance.

I found another interesting thread.

http://avic411.com/index.php?/topic/19417-ignition-mod-on-f900bt/page__st__45

this will prevent crank restarting and with timer it should be perfect.

now I'll have to install backup battery.

now I found software solution.

http://avic411.com/index.php?/topic/27524-modify-your-f-series-base-os-and-registry/

I think this is permanent solution without hardware mod.only link for editor is dead.

I emailed the member who sucessfully installed.so hope he can help me..

OK I finally installed perment solution.

I was gona install second backup battery but found software solution.

EEgeek realeased Wince moder and pretty easy to use.

I modifed registry and add font file.and voila it stay working after resets.

just flow above link and read second page it's really easy.

Does anyone know if this works on F30BT? I currently have the F900BT, but considering buying the F30Bt.

Bump.. can anyone help me.. how to get Asian Fonts permanently on the F700bt?  Thanks!

bump bump.. just hoping someone can pop by... help me to out with to apply asian font on the F unit =)

any 1 ?!?!  bump =) thx