Tom Tom info on SD cards: (this info is based on the original configuration) "My SD Card does not work": You did buy a class 6 card, didn't you? You also need a recent bootloader (comes with a recent navcore).Some problems on the SD card make the TT refusing it. See the Tom Tom site for details: These tools do not fix all problems.If you want N-American languages (English, French, and Spanish) you can try Vocalizer TTS. TTS requires a rather powerfull CPU, which is not present in the older models. This may work: Update: according to Dark Mireille, Loquendo fails to work because of a lock based on the device hardware. SE navcores generally provide Loquendo too "out of the box".

Replace your old zip folder with this one (or replace the contents with the new contents).

...however please note that the version on the forums may be actually OLDER than the official Tom Tom version, so for now only use the Tom Tom link or your device will not be able to find postcodes for new properties.

A safe mode to start with is the native mode ('ori'): a navcore for GOx50 on a GOx20, running in x20 mode (colors, icons, etc.). If you use a Tom Tom file that has 'system' in it: remove it. The fixed flash in your TT is limited to 0/512/1024/2048/4096MB, depending on the model (GO700 & GO910 models have a real hard-disk on board). The navcore takes about 100MB, 220MB if you use computer-voices etc.

This is generally more successful than running in other modes (x40/x50). In general, do not update your bootloader unless you know what you are doing. The size of your map is slightly larger than the download size.

The "Official" marks are based on the Tom Tom (UK) website: It is incomplete. The most important reason for using the SE navcores is getting new functionality. A TT One V1 will never become a TT GO950, but it can be fun seeing how far you can stretch the One's capabilities.

These navcores can be used on TT's that were not made to use them (e.g. SE navcores do not require additional patching (they are already very heavily modified). The bootloader is hardware specific, not navcore specific.

SE navcores can run in different 'modes': showing the screen of a specific TT model. extract a SE basicpack onto flash (without basicpack, include step 8) 5. make a file with in it the current official navcore version for your TT (write in the root of your internal flash), e.g. will magically transform into three ttgo.*'s when booting. make a file with in it the TT model you want to see (mode), e.g. navigate, add voices, and start tweaking Dark Mireille makes ME navcores, comparable to SE navcores. One function, apart from loading and running the navcore, is SD-Card support (to load the navcore from it). The bootloader is the file 'system' in the root of your TT.

Which modes are available depends on what Tom Tom includes in the navcore and the magic of TTuser. x50, x40, x40light, x30, x20, ori (see and this site) Use 'ori' to get the original look for your device. if you like, extract the original navcore-CAB file to internal flash, but do not overwrite any file, and remove 'system' (use Win RAR) Without basicpack, get the splashscreens (*.bmp) from your backup. A second function is USB support, to get a navcore onto your TT. Using the incorrect bootloader can stop your TT from functioning. When you upgrade via HOME you will have a correct bootloader. XXX' in it , you can rename it to 'system', and it will be installed on your TT if the version is higher than the one you already have.

On the GO, the SD card may be used alongside the internal flash. navcore 9alongside navcore 8does not always work) Hacking tip: Backup, clear internal flash, and run from SD cards only.