help- what did I do?

[Chris K]

When I was working on my sister’s calculator (a Ti- 83+), I was editing groups when the calc turned off. I pressed on, and it flashed on then off. I put in the link cable, because I know that when you put it in, the calc automatically turns on. I looked around on the calc for a bit, then pressed “2nd” “Off”. I hit off a few times, and all that did is lock up the calc (It showed the 2nd symbol and the contrast “7” in the upper right corner. After that I couldn’t do anything.).
I took a triple A out, and then put it back in. The same thing as before- it flashed on then off. I used the link cable again to turn it on.
I decided to do a self- test, so I went to [Mode], and then pressed “Alpha” “S”, then [Enter] to start it. The calc displayed a zero in the center of the screen, and after several seconds, displayed “ROM failed”.
I went to the link menu and selected receive, then got my calculator (a Ti- 83+ silver edition) and selected send OS”. After about ten minutes, the process of copying my OS to my sister’s calc was complete. When I pressed 2nd Off, it worked just fine. Everything is now OK with it, although I am still puzzled at how I corrupted my sister’s ROM. Could you help me answer that? If you could, I would GREATLY appreciate it.
Also, I was wondering. If you archive your programs, can you take all the batteries- including the backup battery- out and still have the programs on the 83+ S.E.?
Just so you know, both my sister’s and my calcs are Operating System Version 1.13
Thank you for your time,
From grateful BASIC programmer, Chris K.

[chickendude]

what exactly were you doing with the groups? just making them or were you editing them with calcsys or something? the groups reside in ROM, so maybe that has something to do with it

[Chris]

the archive is a part of the flash ROM available to the user, the rom is like the calc's version of a hard drive, and much like a computer's hard drive, it stores data even after the power to it is cut, (put simply taking out batteries will not do anything to data stored in the archive) and just letting you know...if that happens again, you can try this (it normally clears pretty much every accidently caused problem on the 83+/83+se) take out all the batteries (you don't have to worry 'bout the backup battery) and then put them in backwards, then press [ON], then take them out and put in 3 of the 4 batteries, then while hold [DEL] while you're putting in the fourth, it should now ask for you to send the operating system or whatever...just press [ON] to cancel this, and your calc is back to normal (please note that this will clear your RAM)

[feamsr00]

You might also want to try the "testing flash" thing that is part of the mem upgrade. That *might* do something...