Hi ,
I know more or less what the function of md5 checksum is (i think ).
Checking if all data is correctly transfered/flashed.
But how do i use it / work with it ?
Do i need a program and check every flash i do , in advance manually ,or how ???
Do i find the md5 in every file i want to flash and compare it with the md5 once its on the sd card from the phone before installing ?
Grts
Patrick
Md5 is a way to confirm the data that you have either downloaded or received from any source is a complete accurate copy of the original form.
You can download very simple md5 checkers, see Google, one I downloaded the other night was 25kb.
Sent from my Galaxy Nexus using xda premium
Related
So i tried to go back to rc 29 and now my phone only shows a green/red/blue/white screen whenever i turn it on. I followed the instructions to a T and when it was downloading on my phone it worked all the way till the end then gave me an error message. I dont know what to do please help me.
Thanks a ton
Oh... the dreaded Multi Color screen of Death.
Sorry to say it man. You are out of luck. That is the only TRUE brick that happens.
Better luck next time. No way to fix it. Might as well throw your phone in some water, or use it as a paperweight.
Now, I did hear sticking a paper clip into the USB port while you boot it up often fixes it.
Is this true? F***
Dont worry. Just check md5 of the DREAIMG.nbh .I`m sure that MD5 is wrong, thats why u have error
felicita said:
Dont worry. Just check md5 of the DREAIMG.nbh .I`m sure that MD5 is wrong, thats why u have error
Click to expand...
Click to collapse
can you please explain how to do this?
Your device is from USA or England?
If it`s from USA downdload RC29NBH.zip here http://android-dls.com/wiki/index.php?title=Root_For_RC30.
Then extract file DREAIMG.nbh., Format your sdcard in FAT32, Copy DREAIMG.nbh on SDcard. And then compare the MD5 of your file. It must be MD5 Checksum: 53840b90a0fe1bfab19fab8ef8fb9724. If its OK Turn OFF your phone, insert SD into your phone, turn On your phone.
If you have windows PC you can check MD5 in MD5checker. (you can find it in google).
P.S. Sorry for my English.
Haha I'm just playing roush.
A couple things. When you flashed are you positive your card was FAT32? Also make sure it was update.zip, not update.zip.zip.
Try reflashing the RC 29 image *the DREAIMG one.
Lastly make sure you downloaded the right image and it's not corrupt.
In a linux world, you always... i repeat, ALWAYS check md5 sums of important files.
2BrightSparks makes a great windows program for checking md5 hash sums. http://www.2brightsparks.com/downloads.html
felicita said:
Your device is from USA or England?
If it`s from USA downdload RC29NBH.zip here http://android-dls.com/wiki/index.php?title=Root_For_RC30.
Then extract file DREAIMG.nbh., Format your sdcard in FAT32, Copy DREAIMG.nbh on SDcard. And then compare the MD5 of your file. It must be MD5 Checksum: 53840b90a0fe1bfab19fab8ef8fb9724. If its OK Turn OFF your phone, insert SD into your phone, turn On your phone.
If you have windows PC you can check MD5 in MD5checker. (you can find it in google).
P.S. Sorry for my English.
Click to expand...
Click to collapse
Thank you very much for your help! it seems that the original file i downloaded was corrupt.
Can Someone Please explain MD5 ... The uses and how to compare and check?
Many thanks in advance
What it does, how it works:
en.wikipedia.org/wiki/Md5
Program to calculate checksums (for example):
en.wikipedia.org/wiki/Md5sum
http://implbits.com/Products/HashTab.aspx this puts a tab on your (right click -> properties) and you can compare it there. makes MD5 easy.
its a way of error-detecting to see if it verifies 100% without any errors. this is critical when updating radios and things. if you have a bad copy of it then you may brick your phone or cause damage because you received a corrupted version
zephiK said:
http://implbits.com/Products/HashTab.aspx this puts a tab on your (right click -> properties) and you can compare it there. makes MD5 easy.
its a way of error-detecting to see if it verifies 100% without any errors. this is critical when updating radios and things. if you have a bad copy of it then you may brick your phone or cause damage because you received a corrupted version
Click to expand...
Click to collapse
I sort of get it....just ....what are you checking it with....so say i download a radio.img , then i check its md5 against what ? how would i know that whatever md 5 it had generated is the right one.....sorry for the questions
menov321 said:
I sort of get it....just ....what are you checking it with....so say i download a radio.img , then i check its md5 against what ? how would i know that whatever md 5 it had generated is the right one.....sorry for the questions
Click to expand...
Click to collapse
the OP would include a MD5. once you download it, right click the file you downloaded and go to the hash tab and copy paste the one the OP pasted.. copy paste it into the box and if it matches a check will appear meaning its 100% identical
if OP doesn't include one then you cant check
zephiK said:
the OP would include a MD5. once you download it, right click the file you downloaded and go to the hash tab and copy paste the one the OP pasted.. copy paste it into the box and if it matches a check will appear meaning its 100% identical
if OP doesn't include one then you cant check
Click to expand...
Click to collapse
OP????
what happens though if it isnt identical......
When it isn't identical, then the file got corrupted.
This can happen in a variety of ways, including:
- There was an error during download
- There was an error during the original upload
- The file got corrupted during storage on the server
- The file got corrupted because of an write/read error on your hard disk
- Someone purposefully manipulated the file, for example including a virus or even changed the file so that it would brick your device if you install it.
In any case: If the md5 doesn't match, then installing it is a big NO NO.
Effects can range from no problems over occasional errors and crashes to a completely bricked device (especially, if the error happens to be in the bootloader).
Or if someone manipulated the file willingly, he could be spying on you or causing you costs by making your phone send messages or doing calls to special expensive numbers. Or he could use your phone as a proxy for various illegal things.
PS: OP = orginal poster = the person who posted the file on the first place
Thank-you very much I understand now ....nice comprehensive answer....thanks though to all who posted
Sent from my Nexus S using XDA Premium App
Hi There
I need some help here.
I am trying to install the gingerbread ROM onto my Desire HD, And Im having some trouble.
I have rooted, S-OFF and flashed the clockwork Recovery.
Now I boot into recovery, wipe data, and dalvik cache, Then I select the zip file
from the list, It begins the install for 2 seconds, then stops and brings up this error:
Cant open "filename.zip"
(bad)
Install aborted.
Please can someone help me out here!
Saint3004 said:
Hi There
I need some help here.
I am trying to install the gingerbread ROM onto my Desire HD, And Im having some trouble.
I have rooted, S-OFF and flashed the clockwork Recovery.
Now I boot into recovery, wipe data, and dalvik cache, Then I select the zip file
from the list, It begins the install for 2 seconds, then stops and brings up this error:
Cant open "filename.zip"
(bad)
Install aborted.Please can someone help me out here!
Click to expand...
Click to collapse
good night mate
can be various things...
1-- have you checked the md5 checksum of the file???
2-- try to download again, to change the file name and then copy paste DIRECTLY to sd card root and try again..
in adition.. ensure you that you are using the recommened CWM..
WHAT´S the rom that you want to flash???and what´s your CWM version?
SERGI.3210 said:
good night mate
can be various things...
1-- have you checked the md5 checksum of the file???
2-- try to download again, to change the file name and then copy paste DIRECTLY to sd card root and try again..
in adition.. ensure you that you are using the recommened CWM..
WHAT´S the rom that you want to flash???and what´s your CWM version?
Click to expand...
Click to collapse
I am using CWM version 3.0.2.6
I have re downloaded already, renamed twice and the file is in the root folder.
I am trying to flash "PD98IMG_Ace_Gingerbread_S_HTC_WWE_2.36.405.8_R_Radio_12.54.60.25_26.09.04.11_M2_release_187331_signed"
I have no idea what md5 and checksum is?
Im new to all this
Is that an official ROM?
MD5 is a hash value placed in a packet to insure integrity, pretty much the original packet and packet received do a check to make sure the hash is the same otherwise the file was corrupted or manipulated along the way.
ErOR22 said:
Is that an official ROM?
MD5 is a hash value placed in a packet to insure integrity, pretty much the original packet and packet received do a check to make sure the hash is the same otherwise the file was corrupted or manipulated along the way.
Click to expand...
Click to collapse
I'm not sure if its official.
I basically just want to flash gingerbread to my Desire HD, The OTA Update hasnt been release here in south africa, and I want my gingerbread dammit!
Just flash this: http://forum.xda-developers.com/showthread.php?t=1056727
It is way better then official release
Now go and get some Gingerbread!
Hello,
I'm trying to modify a couple of roms to remove some APKs and add anothers, (Supercharged and Lithium) but I keep getting md5 mismatch, even though I modified the MD5 files with the new MD5 values (using md5sums for windows)
Can you tell me what am I doing wrong / how to force CWM Recovery to ignore the MD5 files?
Thanks
The easiest thing to do is to bypass md5sum checks by leaving the md5 file empty.
cogeary said:
The easiest thing to do is to bypass md5sum checks by leaving the md5 file empty.
Click to expand...
Click to collapse
It didn't work with an empty file, neither did it without an md5 file
Deivid_ said:
It didn't work with an empty file, neither did it without an md5 file
Click to expand...
Click to collapse
I've had problems with if having bad checks even with an empty md5 file. formatting my sdcard fixed it. Just backup your stuff first. hopefully yo don't have 28 GB of music like me
every time i flash a custom rom it says no md5 file found i need help with it please. i have a samsung gs3 verizon 1535
Unless the file you're flashing ends in .md5 it will always say that. If you're just flashing a standard .zip, you will have to verify the md5 yourself before you flash the file with a third party app on your phone or pc. Other than that, nothing to worry about.
ok thanks alot