Update: This tutorial is for non-rooted phones.
Need to wipe your G1 because the phone is corrupted or frozen, e.g., your G1 keeps rebooting over and over again without getting to the desktop/home page?
Are you a non-geek/newbie and not sure how your phone got messed up?
Ready to sell your soul to Satan to get out of your predicament and able to use your G1, again?
Have your friends asked “Why are you carrying that brick?” or “What are you pounding on the table and why are you swearing at it?” “Did your phone really do that you your mother?”
Is your G1 so clogged up that it’s time to soak it in Liquid Drano?
Well help has arrived.
Here is how you do a factory wipe or hard reset. (Note: this procedure assumes you can’t get to the G1′s reset “button” located in the Android OS settings menu and you DO NOT know what the terms “jailbreak” or “root” mean.)
The hard reset (or wipe) will put your phone back to the way it was when you first opened the box.
Inside Information: THIS IS THE “SECRET” PROCEDURE T-MOBILE TECH SUPPORT HAS NON-GEEK CONSUMERS GO THROUGH AS A LAST RESORT WHEN THE G1 CANNOT RECOVER FROM A CRASH. (This is done before the CSR says to send the phone back for a replacement.)
Sidenote: Don’t feel bad, these phones do a lot nowadays, they crash often and need to be reset. And sometimes the phone will freeze and refuse to reboot. This procedure should save your butt.
My video covers both hard and soft resets.
WARNING: The hard reset procedure erases all third party applications you installed on your G1 and reinstalls the
G1′s basic factory applications and the operating system. But I am sure you don’t mind if your phone is not working.
Note: The “default” apps and OS are on the G1′s ROM chip (read only memory). There is no CD or download from Android or T-Mobile required to restore your G1.
Doesn’t get any easier than that! Default apps include calendar, contacts, browser, phone interface, Android Market, Google Maps, etc.
Any apps or data on your SD chip are unaffected by this procedure. Your SIM card is unaffected. In other words, anything on your micro-SD chip will remain intact.
IF IT WILL PUT YOU AT EASE, YOU CAN REMOVE THE CHIP BEFORE DOING THE WIPE.
BONUS WARNING: Be sure a hard reset is what you want to do. Perform a hard reset only if your G1 is really messed up (and you don’t know why). Try the soft reset first to see if that “unfreezes” the phone.
Bonus Tip: If you are simply giving your G1 a bath and you have settings and passwords on the G1, but not elsewhere, make sure to write down what they are BEFORE doing a hard reset.
Also you should be doing periodic backups of your contacts file and other data for when catastrophe strikes.
REPEAT: A hard reset does NOT affect data on your Micro SD or SIM cards.
However, if your phone is messed up because of something going on when your apps access the MicroSD chip you may have to remove the apps and data off the chip too.
REPEAT (because people keep e-mailing me and asking): A SOFT reset does NOT wipe or erase any data on the phone. A soft reset simply “reboots” your G1 just as you do with your PC.
I like doing a soft reset every couple days, it refreshes the G1 the same as a PC reboot cleans up the PC.
When your G1 is starting to run slow or is acting up, a soft reset usually fixes the issue. Of course, if you installed a program and then the G1 is acting up, uninstall the offending program just installed.
My video will show that you press a few combination of buttons and keys, voilà, you are done.
Bonus: For the G2 HTC Magic – This phones does not have a keyboard as it is a touchscreen only smartphone. To wipe the G2 Magic::
Press and hold HOME + BACK buttons.
Then press the END CALL key.
The clear data screen should then appear. Wipe away. 
Duration : 0:8:40
[youtube 9u5zuRSPO2M]
JVZoo Product Feed
Jun 6, 2010 at 14:37:32
i did everything …
i did everything after the g1 screen comes up then it goes blank
Jun 6, 2010 at 14:37:32
tnx for uploading …
tnx for uploading
works for my magic too…..
Jun 6, 2010 at 14:37:32
tnx for uploading …
tnx for uploading
works for my magic too…..
Jun 6, 2010 at 14:37:32
cool dude thanks
cool dude thanks
Jun 6, 2010 at 14:37:32
what should i do if …
what should i do if they both didnt work it stays at the g1 sign when it first start up
Jun 6, 2010 at 14:37:32
is this possible …
is this possible without the dataplan?
Jun 6, 2010 at 14:37:32
@frankbronx did u …
@frankbronx did u ever get that issue resolved? cause the same thing happened to me
Jun 6, 2010 at 14:37:32
Do I Keep the …
Do I Keep the latest firmware, or does the firmware go back too?
Jun 6, 2010 at 14:37:32
it wont let me get …
it wont let me get the rainbow screen
Jun 6, 2010 at 14:37:32
Good man, thanks!
Good man, thanks!
Jun 6, 2010 at 14:37:32
can you help …
can you help me.every time i turn on my g1 phone it goes to a black screen
Jun 6, 2010 at 14:37:32
u helped me so much …
u helped me so much thnx
Jun 6, 2010 at 14:37:32
This helped alot …
This helped alot thnx, but if anyone can confirm that this will work for a G1 that constantly crashes and freezes?
Jun 6, 2010 at 14:37:32
THANK YOU SO MUCH! …
THANK YOU SO MUCH! it is 4:28am here !!! and i should be sleeping instead im trying to fix this piece of s*** phone.i was just about to take a hammer and smash it to pieces. watching this helped me FIXX IT!! it did the trick!! thanks thanks thans thankssss YOU DA MANN.
Jun 6, 2010 at 14:37:32
Hard reset worked a …
Hard reset worked a treat, I cannot thank you enough, you have saved my phone from being thrown out of a window. Thanks again and subscribed!
Jun 6, 2010 at 14:37:32
Hard reset worked a …
Hard reset worked a treat, I cannot thank you enough, you have saved my phone from being thrown out of a window. Thanks again! and subscribed!
Jun 6, 2010 at 14:37:32
when i start up my …
when i start up my g1 i dont see the little android icon blinking beside the android loading icon(the little green man is not visible), is my phone broken..please help..
Jun 6, 2010 at 14:37:32
I couldn”t switch …
I couldn”t switch on my phone.. I mean I pressed the buttons started with the logos and stuff but then just an empty screen. Just followed theese steps, and my baby woke up… THX man..
Jun 6, 2010 at 14:37:32
hey man thanx for …
hey man thanx for your held hope you have more videos
Jun 6, 2010 at 14:37:32
Thankyuh.
Thankyuh.
Jun 6, 2010 at 14:37:32
does the contacts …
does the contacts stay in the phone after i reset it? or is their a way to save the to the simcard
Jun 6, 2010 at 14:37:32
how come i do that …
how come i do that and the 3g symbol at the top doesn”t show and it say i don”t have network connection plz reply
Jun 6, 2010 at 14:37:32
Really nice
love … 
love it, fav it, rated it 
Really nice
Jun 6, 2010 at 14:37:32
do yu keep the chip …
do yu keep the chip on in the bak?