If you want to upload a new set of fonts, you have to use XS++ 3.0 - FSX option:
- create a folder named "files_to_upload" in the XS++ installation directory;
- in "files_to_upload" create the following folder structure: TPA\PRESET\SYSTEM\FONTS
- the full path should be something like this: C:\Program Files\XS++ 3.0\files_to_upload\TPA\PRESET\SYSTEM\FONTS
- in TPA\PRESET\SYSTEM\FONTS folder structure put the following files:
- SF_Theramin_Gothic_bold.ttf
- SF_Theramin_Gothic_regular.ttf
- FONTS.XML
- K800 original FONTS.XML looks like this:
<xml>
<engine cache_size="131072" default="yes">
<font style="sans-serif" weight="normal">/tpa/preset/system/fonts/Sans-Serif_Europe_Reg.ttf</font>
</engine>
<engine cache_size="262144" default="no">
<font style="sans-serif" weight="bold" >/tpa/preset/system/fonts/Sans-Serif_Europe_Bd.ttf</font>
<font style="sans-serif" weight="italic" s01="20" >/tpa/preset/system/fonts/Sans-Serif_Europe_Reg.ttf</font>
<font style="sans-serif" weight="bold-italic" s01="20" >/tpa/preset/system/fonts/Sans-Serif_Europe_Bd.ttf</font>
</engine>
</xml>
- now you have to edit the FONTS.XML file, replacing the following values like this:
<xml>
<engine cache_size="131072" default="yes">
<font style="sans-serif" weight="normal">/tpa/preset/system/fonts/SF_Theramin_Gothic_regular.ttf</font>
</engine>
<engine cache_size="262144" default="no">
<font style="sans-serif" weight="bold" >/tpa/preset/system/fonts/SF_Theramin_Gothic_bold.ttf</font>
<font style="sans-serif" weight="italic" s01="20" >/tpa/preset/system/fonts/SF_Theramin_Gothic_regular.ttf</font>
<font style="sans-serif" weight="bold-italic" s01="20" >/tpa/preset/system/fonts/SF_Theramin_Gothic_bold.ttf</font>
</engine>
</xml>
- turn off the phone, remove and reinsert the battery (do not turn on the phone)
- open XS++ and press "Connect" button
- press and hold the "C" key on the phone and connect the USB cable
- select FSX option in XS++
- press "Start FSX" and wait to complete the upload
- Done. The files are now uploaded on the phone.
- disconnect the USB cable, remove and reinsert the battery
- turn on the phone.
If you want to upload the original K800 fonts again, follow the same procedure, only that this time the content of TPA\PRESET\SYSTEM\FONTS will be like this:
- Sans-Serif_Europe_Reg.ttf
- Sans-Serif_Europe_Bd.ttf
- FONTS.XML (the original K800 file)
I hope this guide will help you to solve your problem.
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GOOD LUCK! BE WELL!





