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How can I change the speed save file in telefang2 to the power save file?
Posted: Mon Jan 19, 2026 12:12 pm
by TelefangBIG_cat
Hello guys, I want to convert my Speed version save file to a Power version save file. How can I do that?
Re: How can I change the speed save file in telefang2 to the power save file?
Posted: Mon Jan 19, 2026 2:43 pm
by andwhyisit
There would likely be two things that would need to be changed in order for a Speed save to be changed into a valid Power save:
1. You will need to modify the save header with a hex editor to say "TELEFANG2 POWER" instead of "TELEFANG2 SPEED".
2. There will be a checksum in the save data that needs to be modified to account for the change in byte values in the save header (otherwise the save will be rejected). Sadly, I have no idea where that is located in the save data. Sorry...
Needless to say even if you knew which bytes represented the save checksum, you should always keep a backup of your save before editing it, because T2 will delete your save if it thinks it is corrupted (as in if the save checksum isn't valid).
Re: How can I change the speed save file in telefang2 to the power save file?
Posted: Tue Jan 20, 2026 4:26 am
by TelefangBIG_cat
andwhyisit wrote: Mon Jan 19, 2026 2:43 pm
There would likely be two things that would need to be changed in order for a Speed save to be changed into a valid Power save:
1. You will need to modify the save header with a hex editor to say "TELEFANG2 POWER" instead of "TELEFANG2 SPEED".
2. There will be a checksum in the save data that needs to be modified to account for the change in byte values in the save header (otherwise the save will be rejected). Sadly, I have no idea where that is located in the save data. Sorry...
Needless to say even if you knew which bytes represented the save checksum, you should always keep a backup of your save before editing it, because T2 will delete your save if it thinks it is corrupted (as in if the save checksum isn't valid).
Thanks you.I'm praying there will be a way to transfer save data, because I don't want to repeat the same process again just to get new Denjuu.
Re: How can I change the speed save file in telefang2 to the power save file?
Posted: Thu Aug 06, 2026 8:30 am
by eriaspikes
snake wrote: Mon Jan 19, 2026 9:43 pm
There would likely be two things that would need to be changed in order for a Speed save to be changed into a valid Power save:
1. You will need to modify the save header with a hex editor to say "TELEFANG2 POWER" instead of "TELEFANG2 SPEED".
2. There will be a checksum in the save data that needs to be modified to account for the change in byte values in the save header (otherwise the save will be rejected). Sadly, I have no idea where that is located in the save data. Sorry...
Needless to say even if you knew which bytes represented the save checksum, you should always keep a backup of your save before editing it, because T2 will delete your save if it thinks it is corrupted (as in if the save checksum isn't valid).
In my experience with older handheld games, the checksum is often the biggest obstacle rather than the header itself. If someone can locate the checksum routine in the ROM, it should be possible to recalculate it instead of guessing. Backing up the original save first is definitely essential since a failed checksum can wipe everything.