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Old 10-01-2015, 09:15 AM   #166
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Originally Posted by Nick_1964 View Post
No they will be not.. and I never had to do a factory reset (yet).. but even then, copy just all of the content of the drive that contains your books and settings including sub folders and you can do a factory reset,after that copy everything back and it is the way it was.. I always do as a safety,so when a factory reset is needed I don't have to generate a new database..but until now never need that safety.
Never thought of doing it that way. Thanks for the heads up!
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Old 10-01-2015, 10:31 AM   #167
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Originally Posted by davidfor View Post
When downgrading firmware, you should do a factory reset. But, in most cases, if you are only going back a version or two, you are safe. In this case there is a database change between 3.17.3 and 3.18.0 that could cause a problem. A column was removed from the user table. If the 3.17.3 might fail if it attempts to use that column. But, looking back, it looks like you are planning to go back to 3.12. In that case, I would recommend the factory reset....
Again, just for folks' information, I downgraded from 3.18 to 3.17.3 without doing a factory reset, although I unpatched first. Turns out that I'm getting a double flash (no black bar) occasionally upon chapter changes that I don't remember getting before on 3.17.3, so I'll now try to restore 3.17.3 after a full factory reset and report what happens. The tip above to simply copy your books first makes it easier, for sure.

EDIT: Full reset appears to be helpful and to have corrected the double flash I described.
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Old 10-01-2015, 10:58 AM   #168
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Originally Posted by rogerinnyc View Post
Again, just for folks' information, I downgraded from 3.18 to 3.17.3 without doing a factory reset, although I unpatched first. Turns out that I'm getting a double flash (no black bar) occasionally upon chapter changes that I don't remember getting before on 3.17.3, so I'll now try to restore 3.17.3 after a full factory reset and report what happens. The tip above to simply copy your books first makes it easier, for sure.
Not only the books, just everything, but be aware that when you downgrade to far the database file "might" be not supported (until now reverting to 3.15 works without problems,never tried to go back more then that.)
So all directory's and subdirectory's and all files in it,then you have your covers,databases,books,settings.. etc..
Click image for larger version Name: 2015-10-01 16_52_56-Total Commander.jpg Views: 414 Size: 61.6 KB ID: 142492
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Old 10-01-2015, 12:13 PM   #169
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Originally Posted by Nick_1964 View Post
Not only the books, just everything, but be aware that when you downgrade to far the database file "might" be not supported (until now reverting to 3.15 works without problems,never tried to go back more then that.)
So all directory's and subdirectory's and all files in it,then you have your covers,databases,books,settings.. etc..
Attachment 142492
You're right, but I'd rather do a totally clean set up -- i.e., redo my settings and let the thumbnail covers regenerate. So I just copy out the books and then recopy them in. If I'm bothering to do a factory reset, I kind of prefer (even if not necessary) to do everything from scratch (except for the books). (And it's not very time-consuming (IMHO).)
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Old 10-01-2015, 01:21 PM   #170
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Originally Posted by rogerinnyc View Post
You're right, but I'd rather do a totally clean set up -- i.e., redo my settings and let the thumbnail covers regenerate. So I just copy out the books and then recopy them in. If I'm bothering to do a factory reset, I kind of prefer (even if not necessary) to do everything from scratch (except for the books). (And it's not very time-consuming (IMHO).)
There is maybe some misunderstanding about a firmware upgrade,downgrade or factory reset.
The firmware and the operating system is placed on another part of the internal storage where we can't touch it without doing some tricks.
The part where the operating system exist and work, is not in the directory's that you copy or can see, but placed somewhere else.
So if you copy all content and all subdirectory's back, you don't copy or replace the firmware or operating system.
While it does depends on the files for settings that you do copy, you don't replace things into the firmware or operating system back.
So it doesn't work the same way as a normal pc works, destroying the windows directory or copy the old windows directory back after an upgrade WILL destroy your system.
The system of the e-reader isn't placed on any of the directory's you copy, it is on another partition where you can't normally touch it.
The patches are "injected" into this operating system, the normal part that we can access doesn't contain anything of the internal operating system. ( as in windows terms, the operating system is on drive C,the part we copy and restore is on drive D )
So even with a total new installed system,returned to default,you can copy the visible part back.
The only problem can occur when the firmware does no longer support the previous format of the database,but even then the chances are very big that it converts it because that is the system doing when upgrading to.. even the betatesters I know do make a copy of the "kobo ereader drive" and restore that..
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Old 10-01-2015, 08:53 PM   #171
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Originally Posted by Nick_1964 View Post
Not only the books, just everything, but be aware that when you downgrade to far the database file "might" be not supported (until now reverting to 3.15 works without problems,never tried to go back more then that.)
So all directory's and subdirectory's and all files in it,then you have your covers,databases,books,settings.. etc..
Attachment 142492
Just to clarify, we basically have to copy every single file & folder found on the Kobo device (including the ones inside the .Kobo folder with the current firmware). Factory reset the device. Install the downgraded firmware. Then paste all the copied files back to the device, including the .Kobo folder, with the previous firmware? Won't there be issues with it considering that the .Kobo folder being placed back to the device contains files with a different firmware as that of the downgraded one (basically overlapping them) or should we not copy the old files that are similar to those included in the downgraded firmware? Thanks!
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Old 10-01-2015, 08:57 PM   #172
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Backing up is always a good idea, though if you're going to copy everything back anyways, you can probably skip the factory reset step unless you also wish to get rid of various mods...

Old firmware can't necessarily handle new database and such, but if you're going to copy it back it's not much difference factory reset vs. no factory reset...
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Old 10-01-2015, 09:16 PM   #173
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Originally Posted by melovesflying View Post
Just to clarify, we basically have to copy every single file & folder found on the Kobo device (including the ones inside the .Kobo folder with the current firmware). Factory reset the device. Install the downgraded firmware. Then paste all the copied files back to the device, including the .Kobo folder, with the previous firmware? Won't there be issues with it considering that the .Kobo folder being placed back to the device contains files with a different firmware as that of the downgraded one (basically overlapping them) or should we not copy the old files that are similar to those included in the downgraded firmware? Thanks!
As a general rule, that will work. As a general rule, Kobo adds tables and columns to the database and doesn't remove them. But, occasionally they do. That means that if you use an updated database with a firmware version that is expecting particular tables or columns, you might have problems.

In 3.18.0 they removed a column from the user table. The column was only added in 3.17, so if you are going back before that, you will be safe. And from what was in the column during the 3.17.x firmware, I don't think it was ever used.

Personally, I take the occasional factory reset as a chance to do a cleanup. I keep adding books and not removing them when I have read them, so after a factory reset, I just send the unread or in progress books back to the device. That gives me an uncluttered device. Well, relatively uncluttered
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Old 10-01-2015, 09:21 PM   #174
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As a general rule, that will work. As a general rule, Kobo adds tables and columns to the database and doesn't remove them. But, occasionally they do. That means that if you use an updated database with a firmware version that is expecting particular tables or columns, you might have problems.

In 3.18.0 they removed a column from the user table. The column was only added in 3.17, so if you are going back before that, you will be safe. And from what was in the column during the 3.17.x firmware, I don't think it was ever used.

Personally, I take the occasional factory reset as a chance to do a cleanup. I keep adding books and not removing them when I have read them, so after a factory reset, I just send the unread or in progress books back to the device. That gives me an uncluttered device. Well, relatively uncluttered
Okay. So, I take it that once I replace all my files and folder, including the .Kobo folder under FW 3.18, to my device that has been downgraded to 3.12, I should hopefully not encounter any problems?
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Old 10-01-2015, 10:27 PM   #175
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Originally Posted by melovesflying View Post
Just to clarify, we basically have to copy every single file & folder found on the Kobo device (including the ones inside the .Kobo folder with the current firmware). Factory reset the device. Install the downgraded firmware. Then paste all the copied files back to the device, including the .Kobo folder, with the previous firmware? Won't there be issues with it considering that the .Kobo folder being placed back to the device contains files with a different firmware as that of the downgraded one (basically overlapping them) or should we not copy the old files that are similar to those included in the downgraded firmware? Thanks!
No.. You first copy everything, including the .Kobo directory first to a safe place, then you place the new firmware files in the .Kobo directory, if you copy it after you placed the firmware file and you put back the backup where the firmware files are included, it will start again with the firmware and again up or downgrade.. So copy everything BEFORE you place the upgrade firmware files to a safe place, then perform up/downgrade and then copy the backup files back.. The firmware files may not be a part of the backup, because restored the system reads the firmware files and start all over again..
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Old 10-02-2015, 05:13 AM   #176
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No.. You first copy everything, including the .Kobo directory first to a safe place, then you place the new firmware files in the .Kobo directory, if you copy it after you placed the firmware file and you put back the backup where the firmware files are included, it will start again with the firmware and again up or downgrade..
So the new firmware files should be placed in the .Kobo directory of the device after it has been factory reset AND on the .Kobo directory of the backup I made? Then that's the time I put back my entire backup, including the .Kobo directory of the backup with the up/downgraded firmware, on my device? Or does the .Kobo directory only contain firmware files so it's fine if I don't put it back? I've only tried the upgrade before (without any backup. Silly me) so downgrading the firmware is getting me quite confused. Thanks!
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Old 10-02-2015, 05:54 AM   #177
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So the new firmware files should be placed in the .Kobo directory of the device after it has been factory reset AND on the .Kobo directory of the backup I made? Then that's the time I put back my entire backup, including the .Kobo directory of the backup with the up/downgraded firmware, on my device? Or does the .Kobo directory only contain firmware files so it's fine if I don't put it back? I've only tried the upgrade before (without any backup. Silly me) so downgrading the firmware is getting me quite confused. Thanks!
I put the way to do it in the spoiler tag so no-one has to struggle to that.
Spoiler:

Normally I use this sequence.
lets point out that I never did the factory reset while up or downgrading, I only tell where I should do it.

1. I make a complete backup of the drive (called koboereader) including all sub directory's ( so including the .kobo directory because there is your configuration files and other needed things.) without the upgrade file placed or downloaded.
2. I download and install the firmware update (or in your case the downgrade)
3. I unzip the package into the .kobo directory
4. Uncut power, the device will reboot after a few seconds and perform the upgrade.
5. Factory reset.
6. Restore the backup.

During point 4 the device will delete the placed firmware so after the device is ready,the upgrade files are gone.

So in my backup are:
The entire .kobo directory including all sub directory's.
.adobe-digital-editions directory
.kobo-images directory and all sub directory's
Digital Editions directory with all sub directory's
All the book directory's
And these files (if present)
metadata.calibre
driveinfo.calibre

If I really think there are problems ahead:
1. I make a complete backup of the drive (called koboereader) including all sub directory's ( so including the .kobo directory because there is your configuration file.) without the upgrade file placed or downloaded.
2. Factory reset.
3. I download and install the firmware update (or in your case the downgrade)
4. I unzip the package into the .kobo directory
5. Uncut power, the device will reboot after a few seconds and perform the upgrade.
6. Restore the backup.

In all cases backups are made before downloading and installing the upgrade files,because if you include the downloaded and placed upgrade files in your backup, they will be removed after update, but if you restore it,the device sees the upgrade files again and start doing it over again.

With the upgrade files I mean the file found here:
https://www.mobileread.com/forums/sho...d.php?t=185660

So very simple said.. you whistle and don't think about the update,don't install files,do nothing.
Go to your koboereader drive and copy everything on it to a safe location, no exeption,all files,all subs,just like the way it was.

Then start thinking about downloading the upgrade file.
Follow this guidelines to install it, Kindly given by Murg.
Installation Instructions for Direct Zip Files
Get a zip file.
Unzip the zip file. This may not be necessary on more modern versions of Windows, as you can access the contents of a zip file without unzipping it.
If going to a previous version, you may want to do a Factory Reset.
If you have any patches installed, you may want to uninstall them. Please refer to any documentation for the patch for more information.
Make sure that the Kobo Desktop is NOT running.
Connect your device to the computer and select Connect on the device (if asked).
Copy the entire contents of the zip file to the .kobo directory on the device. Do not copy the original zip file itself to the device.
Safely remove the device from Windows (or your operating system of choice).
Disconnect the device from your computer.
The device will now install the new software.

The zip file contains the following:
\Upgrade directory and subdirectories - Linux boot and kernel
manifest.md5sum - md5 hashes for the \Upgrade directory
KoboRoot.tgz - this is the firmware

Follow my first step plan.
Success.
Last edited by Nick_1964; 10-02-2015 at 05:58 AM.
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Old 10-02-2015, 08:05 AM   #178
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3. I unzip the package into the .kobo directory
This particular part is the one that confuses me. In 3, do I unzip the firmware downgrade (in this case 3.12) on the .Kobo directory of only the Aura (then do not do anything on my backup, which includes the current .Kobo directory with firmware 3.18) or do I unzip it both on the device and the backup I created and then restore that backup after doing the reset?
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Old 10-02-2015, 08:48 AM   #179
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Originally Posted by melovesflying View Post
This particular part is the one that confuses me. In 3, do I unzip the firmware downgrade (in this case 3.12) on the .Kobo directory of only the Aura (then do not do anything on my backup, which includes the current .Kobo directory with firmware 3.18) or do I unzip it both on the device and the backup I created and then restore that backup after doing the reset?
only on the device, not on the backup.
I make an example here under spoiler tabs again.
Spoiler:

By example I take the firmware file :
kobo-update-3.17.3.zip
it contains:
upgrade (subdir)
KoboRoot.tgz
manifest.md5sum
These are needed once to up or downgrade but never will be a part of any backup.

i can't make it any more clear then this..
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Old 10-02-2015, 08:52 AM   #180
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only on the device, not on the backup.
I make an example here under spoiler tabs again.
Spoiler:

By example I take the firmware file :
kobo-update-3.17.3.zip
it contains:
upgrade (subdir)
KoboRoot.tgz
manifest.md5sum
These are needed once to up or downgrade but never will be a part of any backup.

i can't make it any more clear then this..
I got it now. Thanks a lot!
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