yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab  Android Development] rangercaptain:
At&t wants everyone on the limited data plans.
[Galaxy Tab  Android Development] humberos:
Hi, Roto!

I've just compiled P1000L kernel and I used original initramfs.

I need ask to you how can I modify initramfs to make a pre rooted kernel?

I tried to use voodoo initramfs but zImage was 7,8MB and I can't flash it.

Thank you!

Humberto.

Baseband: P1000LVJJM9
[Galaxy Tab  Android Development] krispyjim:
I have a euro tab and are using overcome 2.0.1 oc-uv with Roto JMIv2 rom. It works really well. You don't need to use Rom manager. Assuming you've installed CWM, just boot into recovery and install cwm compatible kernel zip packgage from there.
[Galaxy Tab  Android Development] shinji21:
Do you install it just like another apk file? Thanks.
[Galaxy Tab  Android Development] elvitas:
Hey Roto,

Will we get a Rotos JMK Rom? :-)

~ from Tab using XDA App. ~
[Galaxy Tab  Android Development] TheGrammarFreak:
If you want a pre-rooted safe version of JMK you can use this:

http://dl.dropbox.com/u/3382637/GalaxyTab/JMK-Safe.tar

But I don't know how to make an update version. If you use Titanium backup to backup all your apps you'll be fine. Modem for this ROM is attached (unzip it first) and it's worth noting that I didn't do anything to change the CSC. I don't know what it is or what it does, therefore I won't flash it. (IE, your CSC won't change when updating)

Hope this helps
[Galaxy Tab  Android Development] delovelady:
Sorry, I just now saw this - I've been away. Yes. Just save it to your SD and open it with a file msnager.
[Galaxy Tab  Android Development] rotohammer:
Yeah, I'll have time to do it tomorrow night.
[Galaxy Tab  Android Development] elvitas:
Nice! Do you allready tested it?

~ from Tab using XDA App. ~
[Galaxy Tab  Android Development] rotohammer:
I think its best to skip the updates when going from one release to another, and use updates within revisions. Update versions just don't include the cache and dbdata partitions.
[Galaxy Tab  Android Development] TheGrammarFreak:
Fair enough, thanks for the insight ;)
[Galaxy Tab  Android Development] Kostiz:
Just used these files to revert back from a overcome 1.4 rom, for some reason my wifi was dying and when i used restore to stock OEM, seems i bricked it.

I used these files to restore my Optus TAB, all when smooth, although I still get the english dictionary issue, (need to read more as to why) so apart from that, it all seems good and well, thanks roto!!

Thank you'd u too

PEACE

Kosti
[Galaxy Tab  Android Development] DarkPal:
hmmm, weird thing is I may only person who has no FC issues with my english dictionary app. I do however suffer from wifi drops and a weak signal (currently on stock JMG firmware with JMF baseband).

Any news on JMK Rom roto? And can anyone tell me if wifi is better on JMK ROM if not which modem/ROM has better wifi.
[Galaxy Tab  Android Development] 69reichertm:
Hello Roto

you say you should skip the update ?

Does this mean no ROM with JK from you ?

I am waiting so very or it.

Would be great to release it.

Regards from Germany

Marcus
[Galaxy Tab  Android Development] DarkPal:
+1 any new on JMK version ROTO?
[Galaxy Tab  Android Development] VeEuzUKY:
Is anyone successfully using the 1.4ghz OC/UV MCR or Overcome V16 Kernel and is there an easy step-by-step guide on how to do it? I just flashed Roto JMI Pre-Rooted v2 and did a EXT4 conversion and all working really great.. but I have no idea on how to now flash a different Kernel or what the MCR or Overcome versions are... new to all this and just want to be pointed in the right direction so I have an idea of what I'm doing:) Thanks a lot for the advice:)
[Galaxy Tab  Android Development] DarkPal:
Guide for Overcome Kernel/ROM: http://xdaforums.com/showthread.php?p=11713685

Guide for Euro Kerel (flashing in recovery):http://xdaforums.com/showthread.php?t=924654

You might want to consult this sticky: http://xdaforums.com/showthread.php?t=933400 will help alot.
[Galaxy Tab  Android Development] VeEuzUKY:
Thanks for the reply:)

OK, so:

http://xdaforums.com/showthread.php?t=924654

Provides info on the kernel and link to download it but never explains anywhere a basic way on how to install it, except for people that know how to do it already... when I also learn, then it will be a piece of cake, bit not yet. Also, its never explained what's the difference between MCR or Overcome versions and I have no idea what they are or what to choose... yes, it's sad to be ignorant, sorry:)

http://xdaforums.com/showthread.php?t=933400

I know this sticky and its great and its provides almost everything needed to deal with the Galaxy Tab but unfortunately nowhere does it explain what MCR or Overcome Kernel versions are.

http://xdaforums.com/showthread.php?p=11713685

Explains how to install Overcome v1.3.0 but never explains what it is or why I need it.

So unfortunately, Im still stuck as before:) Again sorry, it's sad to be ignorant:)
[Galaxy Tab  Android Development] DarkPal:
ok I think we need to start with the Basics. You have 2 (two) options: either stay on your stock ROM if everything works for you and you don't need it to do anything more stay on your stock. OR

Install a custom kernel or a custom ROM: A kernel is a The governor of the CPU usage and Battery output, one can upload certain Kernels to achieve greater performance speed of their device at the cost of some battery life. Basically a way to enhance your tab performance or make it function better. A ROM is a modification of the stock firmware (usually stock firmware is used as base) that has been modified to work more efficiently or stripped of bloatware and uneeded programs to enhance you TAB experience.

There are many devs. (developers) for ROMs and kernels. The process is called cooking (if you're interested to know the terms lol). Most ones that stand out are the overcome the MCR and modaco (consult the bible stickie to find out more).

As for how to install MCR read thread carefully. It said through recovery boot into recovery and install the zip file you placed on your SD card. If you're knowledgeable with Heimdal. Extract the zImage file and flash it with Heimdal.

Basically it comes down to what YOU want: Staying Stock and or going custom.
[Galaxy Tab  Android Development] VeEuzUKY:
Thanks much for the reply. OK, so I'm not stock anymore, as I did install the [Roto JMI Pre-Rooted v2 and feel the Tab is faster and much more responsive. This was done with Odin3 and I had no major difficulties in doing it. Next I did a conversion to EXT4 also using Odin3 and had no major difficulties.

The next step is to install the new 1.4GHz OC Kernel and this is where my difficulties start. I have no idea the difference between MCR or Overcome or what to choose and never used Heimdal before. I cannot find a simply guide on how to use Heimdal and the setting to flash the Kernel. That's what I want to learn, and then ill know.

The final step i want to do is to find how to do a proper backup (image) of my final and complete setup. Resetting a ROM and restoring from a Titanium backup all programs and setting never really works... I've tried it a few times and some stuff never gets restored properly or is corrupt. I read again and again about ClockworkMod beta for the Tab, which seems to be what i am looking for but again, don't find an easy explanation how to get it installed and the use it. i come from having an HTC HD2 where flashing ROMS and doing all sorts of updates and backups is a breeze compared to the Galaxy Tab. With this Tab its all extremely complex... ROMs, Kernels, doing backups... its a new world to me.

Anyway, if you can point me in the right direction on how to flash the custom kernel and using Heimdal, that will be great...after that and if all works well, I just need to learn how to install and use ClockworkMod to do proper backups and have the peace of mind I can do a exact system restore later on if things go bad:) Thanks again:)
[Galaxy Tab  Android Development] DarkPal:
ok its a question of a chicken and egg. IF you flash one of the Kernels they usually have clockworkMod with them so you can do backups to your desire. You can also do the famous ROTO backup if you are knowledgeable with ADB (awesomely it allows you dump the entire tab rom, data everything onto you computer for a yummy ready backup). http://xdaforums.com/showthread.php?t=850359.

The Tutorials I gave you tells you step by step how to flash the kernel (overcome) using ODIN which you seem knowledgeable of (overcome kernel can be installed via odin). MCR can be installed via recovery.

Heimdal is more of an open source program that allows you to flash firmwares, roms, kernels, component by component giving you more control of what you can flash or want to flash. However installing Heimdall Drivers on a pc renders ODIN non usable (you can always uninstall them). Heimdall has a great readme that serves as a manual you can always ask if something gets stuck with you.

You can find Heimdal here: http://xdaforums.com/showthread.php?t=755265
[Galaxy Tab  Android Development] VeEuzUKY:
OK, thanks for the updated info. To make things simpler for me, I think at this point Ill do the Overcome Kernel that can be installed via Odin, since Im already familiar with it.

My only last question where can I find the tutorials you mentioned that give me step by step on how to flash the kernel using ODIN? I want to read those and then will try my luck:)

Thanks again:)
[Galaxy Tab  Android Development] DarkPal:
Here I quoted it for you also first post on overcome kernel have pointers if things go south god forbid. Link for Tutorial is in my previous post.
[Galaxy Tab  Android Development] VeEuzUKY:
OK, thank you very much! I can assume the process of installing the 1.4ghz OC Kernel in the same as installing overcome v1.3.0, correct? If I install 1.4ghz OC Kernel I dont need the overcome v1.3.0 Kernel, or, Do I actually need both installed, first overcome v1.3.0 and then the 1.4ghz OC Kernel? I dont get it.

Also I realize though we talk about overcome ROM version 1.3.0, the download link is for version 1.4.0:

http://xdaforums.com/showthread.php?t=932082

Equally, the overcome Kernel to be used on the ROM above is 2.1.0 while the on the tutorial you suggested me, the instruction are for an older version 1.0:

http://xdaforums.com/showthread.php?p=11713685

It is EXTREMELLY difificult to make sense of any of this or what to use and do. Positively nothing, no version, no process makes sinse and the information never matches. Sheer chaos! I have no idea which version on the Kernel I should use and why and if we talk about overcome ROM 1.3.0 is actually already outdated and we should be talking about 1.4.0 instead.

Thank again:)
[Galaxy Tab  Android Development] Kostiz:
@VeEuzUKY

Overcome 1.4 is also outdate now, a new revision will be out soon from how i read it from the creator of overcome to resolve and update some apps

I dont think its too confusing, just keep it simple and stick to what the instructions are guiding you to do, if you want overcome, use the Overcome_Kernel the best bit about the OC guide is it will be the same for Overcome_Kernel 2.1.1 for Overcome_1.4

Hoped that help champ!

Just remeber to back up *twice* :D and revert if u screw it up

PEACE

Kosti
[Galaxy Tab  Android Development] VeEuzUKY:
Thanks for the info... I still dont even know how to do backups! Need to figure that one out too! i have a question, since my Tab now has the Roto JMI v2 ROM, after I install the Overcome Kernel 2.1.0 (via Odin) I actually have 2 options:

1) I can just install the EURO Kernel 1.4ghz OC/UV from here:

http://xdaforums.com/showthread.php?p=12473031

2) Or I can install the full Overcome ROM 1.4.0 from here:

http://xdaforums.com/showthread.php?t=932082

(this will actually replace my current Roto JMI v2 completely, not just update the Kernel correct?

Which solution is best?... it seems to be they provide very similar results... the only think like I said I need to figure out is how to make backups:)

Thanks again for the input:)
[Galaxy Tab  Android Development] VeEuzUKY:
Why did I have the feeling this would not go well?... Ok so after successfuly flashing Roto JMI v2, I did the next step following exact instructions using ODIN to install the Overcome Kernel v2.1.0. The process started but after 1/2 hour of nothing happening it was still at 0% so eventually I just closed Odin and turned off the Tab.

Now upon restarting the Tab all I get is a screen with the image of a cell phone and exclamation mark and a computer.. and thats it! System does not boot or do anything else but display that screen. Does not matter if I start the Tab with just the power buttin or also pressing the up or down volume button or even if I just connect it to the charger... thats all I get.

How can get out of this? Thanks for the advice.
[Galaxy Tab  Android Development] cx5:
Hi, welcome to MSN me, find it in my profile.

Due this is simple problem, hence no point to repeat here.

Consider this courtesy by forum member "koxudaxi", as he helped / guided me through SKYPE.
[Galaxy Tab  Android Development] krispyjim:
I hope you had a good backup, cos you've effectivly blanked your tab. The positive is that hopefully you'll learn from your mistakes. Go right back to the Roto JMIv2 install and start over.

Use Odin like you did the first time. The ! + PC logo is download mode, so the roto jmi tutorial you followed should get you back to square one.

This is not a difficult process once you've worked out the concepts. It's good to make mistakes cos this is how we learn. Please just read very carefully what people are saying, then to be sure....read it again.
[Galaxy Tab  Android Development] VeEuzUKY:
OK I followed your instructions and got the system back. however upon trying to install Overcome_Kernel_v2.1.0 same problems happens and system hangs completely. I re-did everything again but this this time tried to install Overcome_Kernel_v1.0 and that worked perefctly! After that I updated the system to Overcome_v1.4.0_Full

Now for the retard question, to access overclock/underclock features, where I need to go or what else I need to install?... I can't find anything as far as settings go!

Thanks again!
[Galaxy Tab  Android Development] louser:
Hey all,

I downloaded all the files and ready to pull the trigger, but wanted to know if I instsall this ROM will I have to activate it with TMO? I'm currently in Iraq and can't do anything but wifi here. Any help would be much appreciated.

Lou
[Galaxy Tab  Android Development] dbudny:
I just use Set Cpu from the market and it works great.
[Galaxy Tab  Android Development] DarkPal:
Hi Rotohammer,

when will we see a JMK version of one of the great roto firmwares?
[Galaxy Tab  Android Development] louser:
Did It

Well i flashed Rotos firmware and converted to Ext4 and everything worked like a charm. I was suprised how easy it was, reminded me of my WinMo flashing days. Ran Quadrant and got a score of 1660, wish I would have ran it before I flashed to compare. This Rom seems faster and smoother than the stock Rom. Gotta say I'm loving it so far. The only problem is my XDA premium app doesn't work, pretty ironic I say!! Thanks for the great Rom Roto!!!!!!!

Lou
[Galaxy Tab  Android Development] VeEuzUKY:
haha, I have Android running both on my HTC HD2 running Gingerbread (coming from WinMO) and on my Galaxy and XDA Premium App does not work on any of them! Its really pretty ironic!
[Galaxy Tab  Android Development] pibach:
I am using voltage control app from the market. It is free and you can overclock as well as undervolt. Surprisingly I could set voltage to minimum on all levels (200mV less that regular) and tab runs stable, no issues. So after all I have 1.4Ghz and a true 20% speed improvement at more or less same battery consumption.

However I absolutely agree that while all these steps are rather simple and various infos and howtos are floating around here with hundreds of postings, still there's no good overall, short, and comprehensive description. Can't we have a wiki page for flashing roms? That would make things much easier.

Currently I am looking for a JMK ROM to work with OC/UV.
[Galaxy Tab  Android Development] VeEuzUKY:
Im running Overcome ROM v1.4.0 with SetCPU betwen 600MHz and 1.4GHz. Tab is super super fast and extremelly stable but battery life is a disaster no matter what I do... even if the CPU is set always lower. Do you think I should try to use voltage control app? I neeed to uninstall SetCPU correct? And do you notable see improvement in battery life after lowering the CPU's voltage? I usually have the experinece (mainly on PCs) that overclocking a CPU and downgrading voltage always makes system unstable because the CPU specifically needs mpore juice wehn running faster...
[Galaxy Tab  Android Development] TheGrammarFreak:
Believe it or not, undervolting these actually improves stability. When I had mine going at 1.6GHz a 125mV undervolt made it stable, the "stock" voltage was unusable. Undervolting will, by definition, improve batter life.
[Galaxy Tab  Android Development] VeEuzUKY:
OK, will follow tour advice and give it a try. I assume since now Im using SetCPU, it will not co-exist with the voltage control app so need to uninstall it, correct?
[Galaxy Tab  Android Development] DarkPal:
English dictionary if anyone is interested: http://xdaforums.com/showthread.php?t=1019344
[Galaxy Tab  Android Development] pibach:
Difficult to judge reliably. It runs for approximately 4 to 5 hours continous use with internet (or 6 hours without GSM), which is far more than any phone I had before, but still I can't get through a full day. Can't see any change because of overclocking/undervolting, it is more or less the same as before, just faster.
[Galaxy Tab  Android Development] madsquabbles:
but 125mV doesn't really cause that much drain or battery savings does it? the screen would be the biggest drain on the tab.

does the slight UV really have impact on battery saving?
[Galaxy Tab  Android Development] TheGrammarFreak:
Relative to the LCD the CPU undervolt is negligible. However, the maths would indicate that any UV, however small, will save battery.

Sent from my Legend. Now that's dedication
[Galaxy Tab  Android Development] madsquabbles:
yeah, i suppose in sleep mode it should help a whole lot.
[Galaxy Tab  Android Development] tupo05:
HI,

I flashed the ROM but the tab is always stuck on the samsung logo. It's been 10 days now that I'm struggling with the tab. I tried so many other ROMs but each time ODIN says "PASS" but the tab reboots on the samsung logo. My problem began when i tried to flash XWJMK from samfirmware. Maybe I locked the bootloader !!

But howcome no other ROM can be installed?

The Tab was bought from Canada, was routed and the modem was flashed to Bell modem.

Please advice and thanks in advance
[Galaxy Tab  Android Development] 69reichertm:
Hi ROTOhAMMER

Di you think you will still make an update for us to JKM or did you leave the Samsung Tab ?

I would be very happy to see a rooted JKM.

Regards

Marcus
[Galaxy Tab  Android Development] madsquabbles:
i've tried both overcome and this rom. both have terrible battery life compared to the first time i owned a tab (sprint - stock rom). 8 hrs of sleeping and i've lost 35% battery. according to system monitor it never goes below 30% cpu usage. no apps are listed as hogs and i've not oc'ed the tablet.

need more tests, i just noticed gps was on after my last flashing. i know i have a hard time getting a fix on a gps sig in the house and some bg app may have been trying to access the gps.
[Galaxy Tab  Android Development] humberos:
Locale - Pt-Br

Hi, @rotohammer

Congratulations for hard work on Roto-JMI.

I need ask to you about locales.

How can I do for include Português Brazil in Overcome locales list.

Exists one way to get this on original ROM? How?

Thank you!

@humberos
[Galaxy Tab  Android Development] madsquabbles:
update on my poor battery performance. I only wanted to use the tab as a wifi device so I saw no need to flash a modem. just for the heck of it I did it today and my battery is working as expected.

btw, I posted in the qa section... does anyone know why my mac address keeps changing when flashing rooms?
[Galaxy Tab  Android Development] rangercaptain:
My mac address changed when I damaged my imei, but after 20 modem flashes since then, the address has stayed the same. Anyway, that address is in the efs folder.
[Galaxy Tab  Android Development] floripi:
+ 1

Enviado desde mi Galaxy Tab usando Tapatalk
[Galaxy Tab  Android Development] vavslovakia:
ROTO - JMI

I have big issue with wiffi, low signal even near router, problem with connecting to different games server from different games there it is very visible
[Galaxy Tab  Android Development] wingtytn:
i think he got rid of his tab and nolonger does anything with it but gives advice... as far as wifi signal wen using this firmware there were no issuses but also once u change the rom the firmware is gone
[Galaxy Tab  Android Development] rotohammer:
Nope, I still have my Tabs and use them every day. So far Jmi has been pretty good,but I'm testing 2.2.1 right now and it looks like its worth switching to. I'm pretty busy with work atm but inclined to port my jmi tweaks to KC1. I'll post my progress here.

For the heck of it, I flashed only factorfs.rfs, param.lfs and zImage from KC1 using Heimdall and I was able to keep all my settings/apps intact, sweet! Of course I had to re-root. Seems much smoother/faster than JMI.
[Galaxy Tab  Android Development] dominion666:
Hello,

I have a little problem :'(

This was my first flash, i used .pit and .tar on my Orange Galaxy Tab.

I have down a screencapture of all my apn settings but now when i put my sim in the slot, the galaxy tab don't detect it ! :eek:

So no possibility to add the old settings ... What can i do please ?

Thanks
[Galaxy Tab  Android Development] dominion666:
I answer me, i have found on modaco a file to update the phone :-)
[Galaxy Tab  Android Development] emoratori:
Hey, does this rom unlocks the AT&T tab?

thanks?
[Galaxy Tab  Android Development] pendevous:
I am using this ROM right now. All I can say is that it's fast, stable and simple.

One problem, though. For some odd reason, whenever I go to the Marketplace and check the, "just in" things out, my market always force closes. Any other people experiencing this?
[Galaxy Tab  Android Development] KarlMarsh:
Try going to Settings -> Applications -> Manage Appications

find market app and click on stop app then click on clear data.

Should work after that
[Galaxy Tab  Android Development] p_hsieh:
Dear Roto,

I've been a faithful user of your ROM since it came out. Yours not only runs smoothly, but also is the only one I know how to get OpenVPN to work properly. Thanks and look forward to your new version.
[Galaxy Tab  Android Development] sys73r:
hey, has anybody had any issues with the keyboard?

well, not sure if it's an issue actually, but it seems that with the keyboard JMI has, doesn't pop up the letter as you go typing, like if you press A it shows you the A in a kind of pop up little bigger so you make sure you typed the right letter.

is this a setting that can be enabled? or this JMI doesn't include this function?

thanks!
[Galaxy Tab  Android Development] pendevous:
That's actually the first thing I tried to get it going, but it didn't do anything. It still force closes everytime I click, "Just In."
[Galaxy Tab  Android Development] DarkPal:
No issues with the jmi rom. The pop up thingie was released in roms after jmi namely jmf and jmk.
[Galaxy Tab  Android Development] purline:
I know it's not exactly what you're asking for, but I installed the Gingerbread keyboard after installing Roto's JMI. It's excellent, and has the pop-up feature. http://xdaforums.com/showthread.php?t=875202

Sent from my GT-P1000
[Galaxy Tab  Android Development] sys73r:
Hey man, thanks for the quick response, I've installed and works ok, it looks a little bit different but works

I still would like to know if it is a glitch from the JMI version or is it a configuration that needs to be done.

Thanks!