Upgrading and backup - JASJAR, XDA Exec, MDA Pro General

I want to upgrade my ROM, especially the Radio ROM. But I am a little nervous, as I feel that this is an operation into the deep and decisive structures of my Jasjar.
I am using the excellent backup program Spb backup.
My question is:
If anything goes wrong when I try to update the ROM, will I still be able to retrieve the old version with Spb backup? Or will the new ROM be so deeply entrenched in the Jasjar that I will be unable to return to the old version?
Thankful for answer from someone who knows.

i saved the same software to sd card and found after ROM change i was able to roll back

I haven't actually tried it my self but sprite backup has little tool that you can use to recover a backup across a ROM upgrade. You do the backup as normal, hardreset the phone and run the program to let spritebackup know what the clean OS looks like, then do your upgrade and restore the backup, but point it at the file produced upgrade tool. When I upgraded there were a few things I didn't want to carry across into the upgraded phone, so I just backed up my contacts and reinstalled any programs I wanted after the upgrade.

just started and upgrde, the unit died, i tried to install the old O2 Rom but the exec stays in boot mode with a funny screen, any help please?
lion

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HD2 keeps crashing/hardresetting itself...

first things first: the hd2 is my very first windows mobile device. i've already read the wiki and searched the forum/the internet for help, but i didn't find a solution for my problem. i'm also not a newcomer when it comes to flashing (i've gained some experience from my psp/wii/nokia n82/creative zen).
so i got my htc hd2 a few days ago and one of the first things i tried was flashing a rom (i didn't like the t-mobile branding).
i had absolutely no problems installing hspl (this forum was very informative) and flashing the artemis rom (i strictly followed the instructions), which i found in the rom developement sub forum. since everything seemed to work fine, i started adding my contacts and some applications, still no problems.
but after a while one of the apps seemed to have crashed and the phone became unresponsive.
i removed the battery and turned my phone back on, but it was stuck in the boot screen (the very first screen on which it says "r g d" in red at the bottom). since i didn't know what to do, i simply flashed the artemis rom another time and so the story repeats: at first everything worked fine and after a while the phone got stuck again.
after 4 tries i decided to switch to the shock star r9 rom (also found on xda), which also seemed to work fine at first, but it didn't take long for the phone to freeze again. i took out the battery again and turned the phone back on. this time (to my surprise) it didn't get stuck on bootup, but instead it (automatically) performed a hard reset. the phone now does a hardreset everytime i turn it back on, which makes it pretty much unusable...
since i'm getting REALLY tired of adding my email accounts/favorites/application shortcuts (by now i'm just installing them on the sd card, so i don't have to reinstall them)/facebook associations for my contacts/etc and i thought i'd better ask for help.
does anyone know what causes this issue and/or how i can solve this problem? help would be appreciated!
and since i'm here, what should i use to backup my phone (once it's running perfectly)? i already tried pim backup (sadly it doesn't create a backup of everything) and spb backup (freezes on registry recovery). would it be possible to create a rom that contains ALL of my information (settings/contacts/favorites/applications/registry tweaks/...)?
tl;dr:
my hd2 automatically performs a hardreset on bootup, how do i fix it?
please ignore any grammar errors, i'm tired and not a native english speaker
I have the same problem exactly regarding self-hard-reset. I still did not find any reasonable cause for this problem which is starting really to push on my nerves
This sounds to me like a corrupt file system, which can happen after ROM flashes. I would try this:
http://forum.xda-developers.com/showthread.php?t=644781
@Moandal: thanks for the answer. i just flashed the shock star rom again and the phone boots up normally again. but i really doubt that it will stay like this, unless i know what caused the problem. next time it happens, i'll try the program from your link.
but if i'm not mistaken, that program also hardresets the phone (correct me, if i'm wrong), so i could just flash a rom instead and that's what i'm trying to prevent (as i said, i don't want to have to enter my personal stuff again and again and again...).
what exactly could cause a corrupt file system? could it be a problem with the rom(s) or am i just doing something completely wrong?
A "simple" custom ROM flash only overwrites the ROM's contents without prior erasing, which on the HD2 has been found to sometimes cause trouble like the continuous hard resets you've suffered.
The solution is a full erase of the ROM before flashing the new ROM, which this mtty command does. So, you obviously can't do it without hard resetting/reflashing.
@kilrah: ok, that made things much clearer. i'm going to use the program posted above and flash the rom again, i hope that will fix future issues.
thanks for the fast help, guys
I had the same issues, at first I thought it was the artiums rom but having done MTTY walkthrough I'm 1 week into the Miri rom without much issues (apart from the odd program crash)
since it started pretty much straight away on the first rom, id be a little concerned that it might be an issue with the phone.
if it continues after you mtty/task 29 then id flash back to stock, including spl, and monitor that for a few days.
Code:
@samsamuel: since my last post the phone crashed only once (i was using opera 9.7 when it became unresponsive again), but this time it didn't perform a hard reset!
the main issue seems to be solved and that's good enough, for the time being.
if the problem occurs again, i'll follow your advice.
opera 9.7 - have you moved the cache to the memory card? I've had a lot of freezes the last few days with opera 9 7, turns out it was cos the cache was on the sd card (default 2 gig that came with it).
moved the cache to the phone yesterday, not a crash in 30 hours.
no, but i was actually going to. won't do it now, obviously
please help cause it went crash and hardreset by itself over again..... how can I fix this??

[Q] Help: Nandroid Backup Issue... Freezes on "Generating MD5 Sum..."

I've searched the forum and Google for over an hour, and I cannot find any information on this issue. I am trying to install attn1's R012 ROM. I previously installed the R008 build a couple of months ago, and I have had no issues. I want to upgrade to the latest build, but I am running into a problem when doing a Nandroid backup. As the title to the post suggests, on the last step of the backup, it seems to freeze at "Generating md5 sum...". I have let it sit for over an hour now, and it is still frozen.
I cannot find any information on the root cause of this problem or the resolution. Could anyone shed some light on this for me? And help is greatly appreciated!
What speed SD card do you have? That would be the only real variable as to why your phone is having issues - there could be a timing issue if you are using a real slow card.
have you done a nandroid backup before with no issues? is this a new problem or has it existed previously?
Thank you both for your replies. The SD card is a Transcend 8GB Class 6, and yes, I have done a Nandroid backup before, prior to installing attn1's R008 ROM. I had no issues with that backup.
Also, to at least use my phone for now, I did a battery pull. I tried running the backup again, with the same result.
if your old backup was created normally, i would recommend reflashing that backup and trying installing the new rom again.
reinstalling your apps may be a pain, but it seems like your best chance at restoring the functionality of your phone. or simply wipe everything and install a new rom.
thats happened to me before, right after i flashed a new kernel! It sucked! i had to wipe

[Q] Backup?

Hi,
i want to install Android in NAND. But at the Moment i have WP7.5... And after i tested the Android ROMs i want my WP7.5 back- with als my Data. But how can I make a Backup thats works? Last time i tried this, I wasn´t able to restore it (after reinstalling WP7.5), it Wanted to reboot and nothing... I think it was because of the aMagloader...
Will a Backup with the WP7 Update Cab Sender work? Or is it possible to make a complete NAND image?
no...
use WPDM for backup...
Doesn´t work.. Allway say an Error occoured .
I have the same issue, not sure how to backup for testing other ROM and not having to set everything up again. I tried using Windows Phone Connector for Mac, it makes a backup but the 3 times I have tried it throws an error and does not restore...

Lost everything after Flashing Cynaogenmod

Hi guys...
I wanted to install Cynaogenmod on my Galaxy S4. I followed this instructions and had Clockworkmod on my phone. I made a backup but found that it took not enough time for the quantity of stuff on the phone so I made another backup to sd card...this time it took a lot of time and so I presumed everything was fine. I then copy pasted the folders from the phone to my computer.
I installed Cynaogenmod without any problems but had lost all my contacts...well all data so I wanted to go back to my clockwork backup...get my info and go back to CM...When I tried...no restore!! No restore or restore from sdcard...it says the directory is empty. I'm looking for a way to retrieve my info...can you guys help? I even tried the internet programs to recover data but it can't recognize the phone...help would be really appreciated!

N910W8: Process to completely remove old (corrupted) rom and flash new stock?

hello,
phone was working pretty good up until roughly 2 weeks back, and then it started to slow down, stumble along, then came freezes, and reboots. i know very little regarding android phones, its as if the software has been corrupted. so i have backed up all my apps and data, got my contacts and other info off the phone.
i would like to do a complete reformat of the HDD, and install a new OS, (so to speak) then root and re-install all my personal crap
i have been reading over threads and what not, and unsure how to ensure the old os and everything is removed, prior to flashing the new stock rom.
or is flashing a new stock rom sufficient to ensure that what ever corrupted the old software has been silenced or removed.
thank you

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