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MD5 hash checks, flashing radios, kernels. Could someone explain these?

I just got my Thunderbolt last Thurs. I was previously using a Droid X so these things are all new to me.
What is a MD5 hash check? What if they don't match? Will it brick your phone?
What's the advantage of flashing a new radio? I've noticed that some ROMs require you to flash a new radio. Why is this?
I don't plan on flashing a new kernel but from what I understand it's just a way of adjusting the processor?
Thanks in advance.

First off, Google is always your friend...
MD5 hash checking is basically a way to check to make sure a file is identical in different locations. Often, when people post download links, they'll include the MD5 hash of the original files as they uploaded it. You can then verify that your download file is identical to what they uploaded by generating your own MD5. If they values match, then you're good. If they don't match, then the file you have is different. It could be that someone messed with it (a possibility when downloading from mirror sites) or that it was corrupted while downloading.
You should never try and use a file if the MD5 hash is wrong, especially not when it comes to flashing your phone which is why it's included with almost all downloads you see on the site.
The kernel is basically the low-level operating system of the phone. People tweak the kernel to get desired outcomes such as a faster data speeds or improved battery life. Some of the developers are actually quite good at this, for example, I noticed that on my TB, just when idle I was losing battery at a rate of 22%/hr. I then flashed Leankernel and I've been getting a battery loss rate of 9%/hr while I actually use the phone!
As far as the radios go, it's basically the same thing, just the software that drives the radios. There are a few versions floating around out there, the later version is supposed to be tweaked for better performance and less bugs. As for why some ROMs require it... I'll pass that off to someone more knowledgeable.

drumz0rz said:
First off, Google is always your friend...
MD5 hash checking is basically a way to check to make sure a file is identical in different locations. Often, when people post download links, they'll include the MD5 hash of the original files as they uploaded it. You can then verify that your download file is identical to what they uploaded by generating your own MD5. If they values match, then you're good. If they don't match, then the file you have is different. It could be that someone messed with it (a possibility when downloading from mirror sites) or that it was corrupted while downloading.
You should never try and use a file if the MD5 hash is wrong, especially not when it comes to flashing your phone which is why it's included with almost all downloads you see on the site.
The kernel is basically the low-level operating system of the phone. People tweak the kernel to get desired outcomes such as a faster data speeds or improved battery life. Some of the developers are actually quite good at this, for example, I noticed that on my TB, just when idle I was losing battery at a rate of 22%/hr. I then flashed Leankernel and I've been getting a battery loss rate of 9%/hr while I actually use the phone!
As far as the radios go, it's basically the same thing, just the software that drives the radios. There are a few versions floating around out there, the later version is supposed to be tweaked for better performance and less bugs. As for why some ROMs require it... I'll pass that off to someone more knowledgeable.
Click to expand...
Click to collapse
How do I flash a new radio? Is it the same as flashing a ROM? Just use CW?

NO! It's done through hboot, not through recovery.
Sent from my ADR6400L using Tapatalk

To flash a new Radio, you need to download the file (it will be named PG05IMG.zip, and will be about 25MB in size), and place it in the root of your SD Card (not in a folder).
After that, you want to root into your bootloader (power off your phone, hold the volume down key, and turn it on), select the default option, and it should recognize the update within a couple of seconds, and prompt you to install it.
Hope that helps!

stuckhere4ever said:
To flash a new Radio, you need to download the file (it will be named PG05IMG.zip, and will be about 25MB in size), and place it in the root of your SD Card (not in a folder).
After that, you want to root into your bootloader (power off your phone, hold the volume down key, and turn it on), select the default option, and it should recognize the update within a couple of seconds, and prompt you to install it.
Hope that helps!
Click to expand...
Click to collapse
Okay, thanks. And I think I've read that I need to remove the file from my SD card afterward so it doesn't revert back, right?

dbisch said:
Okay, thanks. And I think I've read that I need to remove the file from my SD card afterward so it doesn't revert back, right?
Click to expand...
Click to collapse
Its a good idea to remove it yeah. It will at least try to do the update again I'm not sure if it will revert back to be honest, I've never tried it.
In any case, best to clean up after words. I have a folder on my SDCard where I put all the radio files, and move them around as I need them.

stuckhere4ever said:
Its a good idea to remove it yeah. It will at least try to do the update again I'm not sure if it will revert back to be honest, I've never tried it.
In any case, best to clean up after words. I have a folder on my SDCard where I put all the radio files, and move them around as I need them.
Click to expand...
Click to collapse
Okay, thanks a lot man.

No worries at all. Good luck!

[Q] flashing rom with Quick flash package

- Quick Flash Package: Radio_12.62.60.27_26.13.04.19_M - HTC 3.06.405.1
http://forum.xda-developers.com/showthread.php?t=877295&highlight=radio+thread
Trying to install the above for use with BinDroid. When Im bootloader mode and when its trying to write the radio it says it could't do it. What can I do?
I used the advanced hack toolkit, does this even do RADIO-OFF?
Thanks

mcvigo said:
- Quick Flash Package: Radio_12.62.60.27_26.13.04.19_M - HTC 3.06.405.1
http://forum.xda-developers.com/showthread.php?t=877295&highlight=radio+thread
Trying to install the above for use with BinDroid. When Im bootloader mode and when its trying to write the radio it says it could't do it. What can I do?
I used the advanced hack toolkit, does this even do RADIO-OFF?
Thanks
Click to expand...
Click to collapse
You must rename the downloaded file exactly "PD98IMG.zip". Once you do that, place on the root of your SD card (i.e. put it on the sd card). Once there, boot into bootloader and it should find the file and flash the radio. I cannot stress enough 2 things. You MUST name the file exactly "PD98IMG.zip" or it will not recognize the file. Also, if you have hide extension preference on, you may not need to add the .zip part to the end of the file. If you do add the .zip and it doesn't recognize in hboot, and you have named it exactly "PD98IMG.zip" then delete the .zip part and try again. Secondly, check the md5 number to be sure you didn't download a corrupt file. More times then not its fine but I cannot stress enough that only bad things can happen if you flash a corrupt radio. Lastly, search search search! there are numerous threads, especially in the dev section (1st thread) that details how to flash radios. Below I've added the link, while the radio that you're about to flash is on the DHD forum, the method to flash is still the same in the provided link below. If this has helped you, know where the thanks button is
FOLLOW THESE INSTRUCTIONS!
Edit: Uhm, not sure what you mean by does this do radio off? If you ran the hack kit and you have successfully installed Bindroid, you should be rooted with S-Off, enabling you to flash the radio with the above mentioned method..in bootloader it should say S-off, again though if you have flashed bindroid, you are rooted successfully I would think..

I did what you told me and its not working for some reason. What could this be? Says something like Wrong Image.

Tried flashing Radio with the toolkit too, it goes through the process but radio is the same.... So frustrating.

Stop. You can't just take any file and rename it to PD98IMG and it will magically work. There needs to be a script included to actually run it correctly. Now if you hold on for a while, I made a PD98IMG file for this radio a while ago for someone else. Let me look for it and I will post back.
The hack kit gives you S-OFF. That's all you need to flash a radio PD99IMG file. Also, please post if you have the Inspire or the DHD. Just curious.

thanks, I will wait. What I did was put the file in root, do a restart into bootloader, select hboot then started running saying wrong P98IMG.zip. Tried 3 different methods and no go. I have an inspire 4g from ATT and has the gingerbread stock radio on it. I want a new radio due to horrible battery life. I noticed that it gives me 3.9v instead of 4.2, is this a problem?

Before I post the file, please make sure you delete any other PD98IMG zip files that are on your sd card.

Yeah I know, also what method should I use with your file?

It seems it was the RADIO i was looking the problem. I put in this one,
Radio w/RCDATA: 12.59.60.26P_26.11.04.21_M
MD5 Sum: 57cccef401c372c6d421c986ee42e0fe and flashing worked perfectly. Guess Ill try this one for a while.

Boot into Hboot. You can do this by these methods. First go into your menu settings and it is usually under Power. Make sure the option for Fasboot is unchecked. After this power phone off. After phone is powered off, hold down the volume down key and keep pressing it. While still pressing volume down key press power buttonfor a second or two. You can let go of the volume button as soon as the white Hboot screen shows up. The phone will scan for files and find the PD98IMG file. It will then ask you if you want to update. Press the correct volume key to accept. DO NOT POWER OFF THE PHONE DURING THE UPDATE. It should take less than a minute. Once it is done, press power to reboot. After phone is running, make sure you delete PD98IMG file off of sd card. It will save you a headache if you ever need to go back into Hboot. Link is posted. Before you transfer to sd card, rename the file to exactly "PD98IMG", without the quotes. Just delete the underscore and the ending I added.
http://www.mediafire.com/?rysi497mkxmrh9g
---------- Post added at 10:58 PM ---------- Previous post was at 10:53 PM ----------
If you flash a radio file then make sure you flash the matching RIL file in recovery, not Hboot. In recovery options, go to mounts, mount system, then go back and select the RIL zip file to flash.

thanks alot, will try with the one you posted now. I was able to flash with another radio so it was that one specifically that was bad or w.e.

If you are going to use the ATT 421 radio you just posted, then flash the RIL file in recovery like I described. Flash the matching RIL file in recovery, not Hboot. In recovery options, go to mounts, mount system, then go back and select the RIL zip file to flash. I am posting the RIL for the radio you just listed and for the one I posted, which will end in 4.19.
I am also including a program created by ZikyHD. Install it on your phone. It is an easy way to check and see what radio and RIL you have installed.

ahhh! my apologies!! I thought he pulled the radio file from the same page I did (not the case) holy crap what a bonehead move by me! Wolf good man! I'm using BinDroid too and flashed the recommended radio recently and pulled the file from a different page...glad Wolf got you straightened out..I should have just posted the PD98IMG I had, glad wolf is on his game better then I am. Assumptions are really killing me lately!

It happens, but be careful when messing around with radio files because you can brick your phone if it messes up. To the OP, make sure you check the previous post made by me for additional information and downloads. Also let us know how it worked out. Test any new radio for at least a few days to a week. It needs to settle down. Remember, what works well for some people in their area may not work well for you, and vice versa.

Wolf_2 said:
It happens, but be careful when messing around with radio files because you can brick your phone if it messes up. To the OP, make sure you check the previous post made by me for additional information and downloads. Also let us know how it worked out. Test any new radio for at least a few days to a week. It needs to settle down. Remember, what works well for some people in their area may not work well for you, and vice versa.
Click to expand...
Click to collapse
I always take extreme caution when dealing with radios...and I cannot stress enough how important it is to delete the radio off the SD card..what nightmare that can become if you softbrick or something...not that I learned that the hard way or anything

I tried installing that app to check the RIL, doesn't phone says its not recognized.

mcvigo said:
I tried installing that app to check the RIL, doesn't phone says its not recognized.
Click to expand...
Click to collapse
well at the risk of making myself an ass again, I use terminal commands to check my ril..as far as I know it does work. If you want to take this route, download your favorite terminal app (I use terminal emulator). Open a command windown and type "su" and hit enter. First time it should prompt you to allow superuser permission. Allow it. then type: getprop "gsm.version.ril-impl" and hit enter. It will display the RIL file and hopefully the one you're expecting!

What phone do you have? That should work with most phones. It an Android program. If you are having trouble installing it then try a program like Easy Installer from the market. You can also run terminal commands on your phone or your computer to check the radio/RIL information.
In phone terminal, type the following after typing su and hitting enter:
getprop "gsm.version.ril-imp"
In command prompt, ADB, type the following after adb shell:
getprop "gsm.version.ril-impl"
Edit: Looks like I did not pay attention and refresh the screen. MMM answered the question. To the OP, what phone do you have and I am assuming the radio flash worked.

Thanks alot bro, with your file it was the only way I could this radio to install, tried alot of other methods and it would't work. Thanks alot again.

[Q] Help me... I am worried - HTC Incredible S

Hi All,
I have successfully rooted my HTC Incredible S and then, I have installed a custom ROM "Galnet MIUI-Icecream Sandwich ROM-Build:2.11.26" using the ROM Manager App available in the Android Market.
Everything went on well... the back up, clearing the cache etc. are all completed successfully and my mobile rebooted. There was a new screen with a flash image showing MI (in orange letters) with xiaomi.com just below it. I waited for almost 30 minutes but the screen is just showing the same flash image playing some nice notification sound.
Now Should I be worried? Is it a part of the process or is my mobile Bricked ?
Please help...

Have you tried flashing a new ROM in the custom recovery or restoring your back-up? Doesn't sound bricked to me...

DistrictDigital said:
Have you tried flashing a new ROM in the custom recovery or restoring your back-up? Doesn't sound bricked to me...
Click to expand...
Click to collapse
I have recovered it from the backup... it's not bricked
But I am wanting to install some latest and stable custom ROM compatible with HTC Incredile S.
Any suggestions please....

You must ALWAYS check the md5 sum of all of your ROM's. This could have been a very bad thing for your phone and your wallet. Any ROM in your phone's specific Android Development section is almost guaranteed to work. Just re-download your MIUI ROM and enjoy.

DistrictDigital said:
You must ALWAYS check the md5 sum of all of your ROM's. This could have been a very bad thing for your phone and your wallet. Any ROM in your phone's specific Android Development section is almost guaranteed to work. Just re-download your MIUI ROM and enjoy.
Click to expand...
Click to collapse
I understood the later part but regarding the first part in which you said 'You must ALWAYS check the md5 sum of all of your ROM's".....can you please help me understand that.

An MD5 is a long number that will usually be shown next to your ROM download. This number is unique to that particular file.
If something happens during your download that corrupts the ROM file (breaks it), then the MD5 number will be different when you check it. This warns you the file you have got on your computer is different to the original.
There's a good description of how to check and use MD5 on the OpenOffice website - try Googling the words: openoffice md5.
An MD5 is called a 'checksum', there are other ways of working out checksums that you also might see, like CRC or SHA-256. All have benefits and downsides.
In short, checking the MD5 makes sure you aren't flashing a 'bad' copy of the file, which might break your phone.
Hope that helps

skuffle said:
An MD5 is a long number that will usually be shown next to your ROM download. This number is unique to that particular file.
If something happens during your download that corrupts the ROM file (breaks it), then the MD5 number will be different when you check it. This warns you the file you have got on your computer is different to the original.
There's a good description of how to check and use MD5 on the OpenOffice website - try Googling the words: openoffice md5.
An MD5 is called a 'checksum', there are other ways of working out checksums that you also might see, like CRC or SHA-256. All have benefits and downsides.
In short, checking the MD5 makes sure you aren't flashing a 'bad' copy of the file, which might break your phone.
Hope that helps
Click to expand...
Click to collapse
Thanks a lotttt.. it was wonderful knowledge sharing

No worries - glad to help

4.3 help!!!

I have an N8013 and I have been trying to go to 4.3 for a while. Like illusion rom... i've tried cwm a few versions even the latest, twrp, and even philz recovery as recommended and I even deleted the updater scripts as recommended. I for the life of me can not get past the zip file failing to flash. I've downloaded the rom multiple times, used odin to go back to completely stock, factory reset.... just about everything. There is one other dude tellin me to do this....
"I have a N8013, and deleting the assert and getprops works for me 100% of the time. However, it is important to note, two things. One you have to have the N8013 version of the ROM, which is labeled N80xx, and 2, when you go to install it after you have modified the file, you will get a validation error because the zip file will no longer match the MD5 validation, you have to install anyways. Other than that it works fine on my N8013, using CWM 6.0.3.1, running official CM 10.2."
But I dont know exactly what file he is talkin about. If ANYONE can help me out with this id be forever grateful.

First thing first. I'm guessing from what you don't understand is the MD5 validation.
So let me try to explain it. Doing an MD5 check, is basically checking the fingerprint of a file to the fingerprint posted. You get an MD5 sum by running it though a MD5 hashing program. Someone that knows the terms better then me will probably jump in and correct my terminology. But the best way of saying it is that by comparing MD5 sums, you are able to see if a file is unaltered.
Second, you'll want to make sure the file you download is compete and uncorrupted. So you run it though the hasher, and get the MD5 sum to check it against the posted numbers.
For "Illusion-v2.5.alpha-UNOFFICIAL-n8013.z" the MD5 Sum is: 95eb24cadc1a7721934a508e3ce97212
For "Illusion-v2.5.alpha-UNOFFICIAL-n8000.zip" the MD5 Sum is: 7789f71ca54647b43c352837702795a3
Now as for a hashing program, if you are on Windows, I would suggest a program called HashTab. http://implbits.com/
It puts the hashing into a tab so you can just right click the file, click Properties, and then "File Hashes"
So for the next thing that you need to do to make sure everything is good, is to check the MD5 sum of the file you download (unmodified) and make sure it is a good download. If all of that is good, then something else is going off.
I will note that right now I'm running the n8000 version on my n8013. Yes there are reasons I do that, even though the GSM hardware isn't in place. But using the n8000 version makes use of VoIP phones much easier.

Niscandia said:
First thing first. I'm guessing from what you don't understand is the MD5 validation.
So let me try to explain it. Doing an MD5 check, is basically checking the fingerprint of a file to the fingerprint posted. You get an MD5 sum by running it though a MD5 hashing program. Someone that knows the terms better then me will probably jump in and correct my terminology. But the best way of saying it is that by comparing MD5 sums, you are able to see if a file is unaltered.
Second, you'll want to make sure the file you download is compete and uncorrupted. So you run it though the hasher, and get the MD5 sum to check it against the posted numbers.
For "Illusion-v2.5.alpha-UNOFFICIAL-n8013.z" the MD5 Sum is: 95eb24cadc1a7721934a508e3ce97212
For "Illusion-v2.5.alpha-UNOFFICIAL-n8000.zip" the MD5 Sum is: 7789f71ca54647b43c352837702795a3
Now as for a hashing program, if you are on Windows, I would suggest a program called HashTab. http://implbits.com/
It puts the hashing into a tab so you can just right click the file, click Properties, and then "File Hashes"
So for the next thing that you need to do to make sure everything is good, is to check the MD5 sum of the file you download (unmodified) and make sure it is a good download. If all of that is good, then something else is going off.
I will note that right now I'm running the n8000 version on my n8013. Yes there are reasons I do that, even though the GSM hardware isn't in place. But using the n8000 version makes use of VoIP phones much easier.
Click to expand...
Click to collapse
Wow, thank you sir. No one has ever explained it to me like you did. I honestly appreciate it. I have a PC running windows 7 and I also have an iMac for my music. Not saying I completely understand how to do what your telling me but it puts in to a much greater perspective and for that, thank you. I know something is going wrong. This isn't my first rodeo but I definitely don't know how to change stuff around or dissect it yet. I started rooting and modifying about a year ago. Im a tech so in interests me. But I don't all that much time to dissect yet or understand what your saying exactly. I guess I just need a good download. Maybe I'll try the N8000 version instead. I don't care about the GPS and I use VOIP a lot more than I would GPS. I'll try that I guess. But thank you for the great response and for taking a moment to help a fellow androidian out.

Thought:
Could it be that im downloading the rom to my iMac, transferring to my pc via flash drive thats corrupting it somehow? I dont have hemidal or samsung drivers on my imac but it seems to download the files faster thats why im doing that. But when it finishes its a folder not a .zip so I transfer it to my pc and compress it with 7zip.
I think other people are getting the same error tho as well so maybe not..

RussellEstridge25 said:
Wow, thank you sir. No one has ever explained it to me like you did. I honestly appreciate it. I have a PC running windows 7 and I also have an iMac for my music. Not saying I completely understand how to do what your telling me but it puts in to a much greater perspective and for that, thank you. I know something is going wrong. This isn't my first rodeo but I definitely don't know how to change stuff around or dissect it yet. I started rooting and modifying about a year ago. Im a tech so in interests me. But I don't all that much time to dissect yet or understand what your saying exactly. I guess I just need a good download. Maybe I'll try the N8000 version instead. I don't care about the GPS and I use VOIP a lot more than I would GPS. I'll try that I guess. But thank you for the great response and for taking a moment to help a fellow androidian out.
Click to expand...
Click to collapse
Well to start, would be to download the Hashtab program and install it. That gives you easy access to the MD5 sums that you'll need so you can verify downloads.
Now on your Mac, I can only tell you how to do it from the command line. Open up a terminal window and type in without the quotes "md5 filename" replacing filename with the file you want the MD5 sum for.
Hashtab is a nice user friendly version, but it is a 3rd party program. Some people don't like those. So your choice there.
I can also tell you of the only real problem I have had so far with the Illusion Rom. Bluetooth Tethering doesn't work. Now what I mean by this is using Bluetooth on a Cell Phone to give Data to the Note is problematic. DHCP doesn't work til launched manually, and DNS servers don't work. So as long as you don't use Bluetooth Tethering for your Note you'll be fine. But if you use Bluetooth tethering ( a small group of people I know) might not want to upgrade quite yet.
RussellEstridge25 said:
Could it be that im downloading the rom to my iMac, transferring to my pc via flash drive thats corrupting it somehow? I dont have hemidal or samsung drivers on my imac but it seems to download the files faster thats why im doing that. But when it finishes its a folder not a .zip so I transfer it to my pc and compress it with 7zip.
I think other people are getting the same error tho as well so maybe not..
Click to expand...
Click to collapse
Now this explains the entire problem... Your Mac is unzipping the file, and probably destroying some of the symbolic links. Rezipping it still leaves the broken links and causes problems. I don't remember how to tell OSX (Mac) not to auto unzip files. But you'll need to do that or download it on your PC.

Niscandia said:
Well to start, would be to download the Hashtab program and install it. That gives you easy access to the MD5 sums that you'll need so you can verify downloads.
Now on your Mac, I can only tell you how to do it from the command line. Open up a terminal window and type in without the quotes "md5 filename" replacing filename with the file you want the MD5 sum for.
Hashtab is a nice user friendly version, but it is a 3rd party program. Some people don't like those. So your choice there.
I can also tell you of the only real problem I have had so far with the Illusion Rom. Bluetooth Tethering doesn't work. Now what I mean by this is using Bluetooth on a Cell Phone to give Data to the Note is problematic. DHCP doesn't work til launched manually, and DNS servers don't work. So as long as you don't use Bluetooth Tethering for your Note you'll be fine. But if you use Bluetooth tethering ( a small group of people I know) might not want to upgrade quite yet.
Now this explains the entire problem... Your Mac is unzipping the file, and probably destroying some of the symbolic links. Rezipping it still leaves the broken links and causes problems. I don't remember how to tell OSX (Mac) not to auto unzip files. But you'll need to do that or download it on your PC.
Click to expand...
Click to collapse
Dont you mean how to tell a mac how to autozip the files? But again thank you. That helps a lot.

RussellEstridge25 said:
Dont you mean how to tell a mac how to autozip the files? But again thank you. That helps a lot.
Click to expand...
Click to collapse
From how it sounds your Mac is auto-unzipping. You want the Mac to leave the downloaded zip file & leave it alone. Not to unzip & rezip it up. That is what is causing trouble, the unzipping and rezipping more then likely. So disable the "expand archives". Doing a quick search try reading up on it here to get Safari to behave. https://discussions.apple.com/thread/1483114?start=0&tstart=0

Niscandia said:
From how it sounds your Mac is auto-unzipping. You want the Mac to leave the downloaded zip file & leave it alone. Not to unzip & rezip it up. That is what is causing trouble, the unzipping and rezipping more then likely. So disable the "expand archives". Doing a quick search try reading up on it here to get Safari to behave. https://discussions.apple.com/thread/1483114?start=0&tstart=0
Click to expand...
Click to collapse
Thank you thank you thank you. You answered me exactly the way I needed to hear it. :good:

RussellEstridge25 said:
Thank you thank you thank you. You answered me exactly the way I needed to hear it. :good:
Click to expand...
Click to collapse
Just needed that key piece of info. That you where rezipping the file after using your Mac to download it.
Hope it installs this time around. But I would suggest learning how to check the MD5 sums as well. Doesn't hurt to be careful.

Niscandia said:
Just needed that key piece of info. That you where rezipping the file after using your Mac to download it.
Hope it installs this time around. But I would suggest learning how to check the MD5 sums as well. Doesn't hurt to be careful.
Click to expand...
Click to collapse
I completely agree. And I plan to. Didnt know it would be that easy. Again thanks man. But you completely helped me understand. I love learning about this when there is someone willing to teach.

I just downloaded the rom on my pc and its doing what it was before. I try putting the zip file in to my internal sd on my tablet and it says "CAN NOT COPY ITEM, The device has either stopped responding or has been disconnected"
It has not I can assure you. I've tried rebooting the tablet and pc when this happened before and still with no avail. I can copy other files to my tablet no problem. I've never ran into this before.
I cant even open the zip file or extract it to my desktop right now. Seriously, what the hell.
says windows cant open it cause the file is invalid. Must be that MD5 thing your tellin me to do. So now That im doing it on my windows pc should I install that program you mentioned?

RussellEstridge25 said:
I just downloaded the rom on my pc and its doing what it was before. I try putting the zip file in to my internal sd on my tablet and it says "CAN NOT COPY ITEM, The device has either stopped responding or has been disconnected"
It has not I can assure you. I've tried rebooting the tablet and pc when this happened before and still with no avail. I can copy other files to my tablet no problem. I've never ran into this before.
I cant even open the zip file or extract it to my desktop right now. Seriously, what the hell.
says windows cant open it cause the file is invalid. Must be that MD5 thing your tellin me to do. So now That im doing it on my windows pc should I install that program you mentioned?
Click to expand...
Click to collapse
I've had that problem before with windows. Not sure exactly what causes it, my guess is some data on the usb connection is causing it. Wrong driver or something.
When it happens changing USB ports, sometimes helps. Or you can use ADB to copy the file over. Not sure if you have used ADB before or not. The third way is to pull the Micro SD card out of your Note, and use an adapter (SD to USB) to put the file directly onto it from windows.
Only options I can think of off the top of my head for that problem. But it is one I've seen before.

Niscandia said:
I've had that problem before with windows. Not sure exactly what causes it, my guess is some data on the usb connection is causing it. Wrong driver or something.
When it happens changing USB ports, sometimes helps. Or you can use ADB to copy the file over. Not sure if you have used ADB before or not. The third way is to pull the Micro SD card out of your Note, and use an adapter (SD to USB) to put the file directly onto it from windows.
Only options I can think of off the top of my head for that problem. But it is one I've seen before.
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Great ideas! I can try the sd one tomorrow. Day 3 lol. Wish Me luck

I may have missed this part, so I apologize. Is there any reason you can't just download it directly from the tablet, saving it to the sd card? It would assuredly cut down on the headache and potential file corruption during transfer between devices.

spycedtx said:
I may have missed this part, so I apologize. Is there any reason you can't just download it directly from the tablet, saving it to the sd card? It would assuredly cut down on the headache and potential file corruption during transfer between devices.
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Already got cm10.3 up and running. The developer gave me a nightly build that had all the files taken out already. Had to download it twice but got it after putting it on my internal memory. Thank you for your help. The note 10.1 has a good community of people.

File Download Issues

I have a question and am curious if others have seen it and know how to resolve it.
I am by far not new to Android and mods, custom ROMs, etc but I ha e come across something that I just can't seem to get around.
When I try to download something to flash via TWRP, or install by most any other method, over 90% of the time I cannot get an md5 match. I have tried Chrome, Dolphin, and a couple other browsers, too. Is there any other way to get a good download straight to the Pixel with downloading on the PC and copying it over??

FernBch said:
I have a question and am curious if others have seen it and know how to resolve it.
I am by far not new to Android and mods, custom ROMs, etc but I ha e come across something that I just can't seem to get around.
When I try to download something to flash via TWRP, or install by most any other method, over 90% of the time I cannot get an md5 match. I have tried Chrome, Dolphin, and a couple other browsers, too. Is there any other way to get a good download straight to the Pixel with downloading on the PC and copying it over??
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You sure have an interesting dilemma. You can try download a small file multiple times, then use WinDiff to compare those downloads. If they match exactly, but do not match the original md5, then the issue is most likely local, and not the download source. Or, if they're different from each other, then your problem is also local. Have you tried a different PC with the same Internet connection?
As far as your other question, unless I'm misreading the question, why can't you download to the phone directly? Most of my downloads go directly to my Pixel's external storage. I don't usually touch a PC.

You understand my question. I discovered the issue trying to download TWRP RC1. The file size is 8.65Mb and I cohld never get a good md5 match downloading straight to internal memory. I started to doubt if the md5 mismatch was actually true so I tried to flash it and it failed. TWRP Alpha2 reported a corrupt zip file. I downloaded via PC, copied to storage, and then got a good md5.

FernBch said:
You understand my question. I discovered the issue trying to download TWRP RC1. The file size is 8.65Mb and I cohld never get a good md5 match downloading straight to internal memory. I started to doubt if the md5 mismatch was actually true so I tried to flash it and it failed. TWRP Alpha2 reported a corrupt zip file. I downloaded via PC, copied to storage, and then got a good md5.
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So is your problem resolved? They just sound like bad downloads to me, whether that's by unreliable connection (stop and restart of packet transferring), or corrupt packet verification, or some abnormal task on your PC that takes a good download and saves a corrupted copy of it. I know, I know, some will say that there's no such thing as a bad download since CRC and other algorithm prevent that. And they're right. However, a browser can still create a bad file from a valid download.

Not resolved. Until I figure it out I download via PC and copy to device. One added bonus is I can download to a flash drive and use the adapter to plug it directly into the Pixel.

Oh, I did notice that the bad md5 files also differ in size. Seems to happen most when using Chrome.

FernBch said:
Not resolved. Until I figure it out I download via PC and copy to device. One added bonus is I can download to a flash drive and use the adapter to plug it directly into the Pixel.
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The other benefit of using an external drive is that you don't run into the TWRP decryption issue, where your folders and files are jumbled up. Data on external drives are not encrypted.

quangtran1 said:
The other benefit of using an external drive is that you don't run into the TWRP decryption issue, where your folders and files are jumbled up. Data on external drives are not encrypted.
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I read that, too. I honestly haven't had that issue. Yet. The first couple times I used TWRP I wasn't prompted for a pattern at boot. I found if I power off then boot to TWRP manually it always prompted me first time. Since doing that about three times I haven't had an issue since.
****Update****
Ok, after sitting back I decided to "Go back to basics". I uninstalled all browsers on my device. I then reinstalled Chrome and tried a download, failed to get an md5 match. I then reinstalled Dolphin and downloaded the same file. Success, I have a md5 match. Seems that Chrome browser is the problem. Not sure why it wouldn't work on Dolphin previously but I have successfully downloaded four times now.