Okay im new to this forum .I was reading over and over how to get the second update. and i see people still had problems. I finally did it last night.and i figured out the problem. (IVE DONE IT ON 2 DROID INCREDIBLES )
1st. you should alredy have the first update 2.3.4 (4.06 xxxxx) which was like 80 mb. if not you can do it manually ,no root required (google it)
then where most people are having problems is with the second update its about 8 mb.
when i first got it.it downloaded it and restarted saying low memory so it cnt update.SO TO get throught that u must do this
2.move all apps possible.. to ur sd card (if ur apps rnt showing up.just unmount and remount the sd card)
3delete ur yahoo.
4.delete some messages from ur phone messages.try to have the least as possible.
keep doing that untill ur message that says low memory goes away
5. hold the power n cick restart. when it turns off hold powen n volume down button until u go into the sboot i think its called.
then go down to restore. when u get the red errow thing. hold the power and the volume up button. a little menu comes up n click the LAST OPTION... t says erase phone catche ..something like that. AND then restart
6.when it starts up go to settings then date and time. uncheck atomatic.. then mess around with the date. sometimes it still atomatically goes back to the current date.. what i did was also change the month to october n the year 2012..mess aroun with it untill it stays.
7. go home.click phone type *#*#2432546#*#* IT WILL SAY CHECK IN SUCCESSFULL then go back to the date and time.. n mess with the date. i put it as november 2010.n i got the update. ive done it 5 times on 2 different phones.. it takes 5 minutes the most after ur messing with the date.
you will recive the update and it will restart and do its thing....if at the end u still get the low memory notification. just delete more messages from ur phone messages.(step 2-4) and REDO STEP 5 THROUGH 7... ive done this multiple times n it works.. updated 2 phones succesfuly after finally understanding this consept.