[Q] Help! Upgrading Xperia X10 Mini Pro (u20i) to MiniCM9-3.0.1 [5/5/12]ICS 4.0.4/CM9 - Sony Ericsson XPERIA X10 Mini

HI evryone,
I am just a beginner using android for few months... My device is Xperia X10 Mini pro U20i..
I tried to upgrade to MIniCM9 3.0.1 from CM7 (CM7 was working wel, i just wanted to upgrade)..
I downloaded MiniCM9-3.0.1 [5/5/12]ICS 4.0.4/CM9 from http://forum.xda-developers.com/showthread.php?t=1636501
I wiped cache, user data and dalvik cache n tried to install CM9 rom.. It installed successfully, but I received a warning message. 'Should have kernel flashed to atleast ics-nAa 01' like dat...
But when i rebooted, it didnt go beyond d Sony Ericsson logo.. I went back to stock 2.1 using SEUS..
Then I rooted mobile using SuperOneClick 1.6.5 n rooted successfully. But wen i flashed the kernel 'U20_nAa-ics_01_2.6.29.6-nAa-ics-01.ftf' or 'U20_nAa-ics_01_2.6.29.6-nAa-ics-02.ftf' from http://forum.xda-developers.com/showthread.php?t=1636504, it couldnt flash.. I get an error ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ERR_DYNAMIC="SIN header verification failed"..
I tried flashing with flashtool 0.2.9.1 and with flashtool 0.7.1.0 but i couldnt get it done..
Can anyone help me with dis? Why do i receive dat error message? How can I upgrade to CM9??
While upgrading to CM7, I never flashed my device. I just rooted it, installed xrecovery n cleared factory data, disk cache, dalvik cache n installed d rom... So, is there any similar way to install CM9 also without using flashtool?
Thanks..

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You need a custom kernel for MiniCM9, and the reason you can not flash this kernel is because your bootloader is locked. In the kernel thread there is a link to the tutorial on unlocking your bootloader, but please be careful, it doesn't work for everyone

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Thanks for dat...
Is there a way we can install CM9 on U20i without unlocking bootloader?
Also, plz tell, does SEUS work after unlocking bootloader?

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No you can't install MiniCM9 on anything other than the nAa-ICS kernel, and for that you need an unlocked bootloader
Yes, seus or pc companion will still work with an unlocked bootloader. the worst that can happen when unlocking the bootloader is that you will lose the ability to use your phone as a phone (disabled radio-capabilities). Check if it still works before flashing a kernel and custom rom, if it doesn't relock the bootloader and stay on stock kernel.

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How to relock Bootloader? Link for U20i Stock Kernel..
Oh. Thanks a lot..
How to relock bootloader? I saw in a forum somewhere that there s no way to relock bootloader..
Also I tried to download the stock kernel for U20i from this page: http://forum.xda-developers.com/showthread.php?t=1254225... They have given the link for downloading the stock kernel as http://db.tt/ukt80PBn
But the link doesnt work. I have searched many times but could neither open it nor find alternative link.. Can u plz tell any alternative link for it?
Thanks so much for ur responses..

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First of all, you can relock your bootloader using S1Tool (by pressing the restore button), but if it is succesfully unlocked there is no need to relock it at all, unless you need to take it back to the shop for repairs under warranty.
(I can't remember where i got the latest version of S1tool from, i'll search for it later if you need it)
as far as the stock kernel is concerned, just do a repair with pc companion or maybe seus, i usually use pc companion. it won't relock your bootloader but will install a fresh stock kernel and rom. After that you can root, install recovery or cwm whatever you used and restore the backup you hopefully made of your MiniCM7 rom.
Mind you: At this moment Minicm9 is not an upgrade yet in the sense that it will make your phone work better or easier, it's still very early in development and not that easy to get working well, if you need your phone on a day-to-day basis, stick with MiniCM7 for now.

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Thanks a lot for that info..
I hav no complaints wid CM7. I just wanted to upgrade to ICS since it is out there.
I'll try unlocking bootloader n cm9. I'll go back to cm7 if it doesnt work or if it isnt suited for day-to-day operations..
Thanks so mch for ur help.. I ve understood a lot.. Thanx again.. :-D
If u find d link for S1tool, kindly post it..
Sent from my U20i using XDA

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S1Tool with Restore button
Good luck, i hope everything works fine for you

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I unlocked d bootloader, flashed n installed d MiniCM9 rom...
It works fine.. ICS is awesome..
Thank u 4 all ur help

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Happy days then Have fun...

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x10 mini pro 2.1 to Gingerbread (MiniCM7)
sjoedanny said:
I unlocked d bootloader, flashed n installed d MiniCM9 rom...
It works fine.. ICS is awesome..
Thank u 4 all ur help
Click to expand...
Click to collapse
hi
I was checking xda forum for upgrading my x10 mini pro to gingerbread version and I am really confused with the whole process. At present I rooted my phone with superone click and confused with next steps. do i need to unlock bootloader ? do i need to flash with Naa kernel ? Some guides instructing to install minicm7 without unlock bootloader and kernel flash.which correct or good ? I dont know what to do and I dont want to brick my phone too. Please help me and thank you very much for ur time

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shane64 said:
hi
I was checking xda forum for upgrading my x10 mini pro to gingerbread version and I am really confused with the whole process. At present I rooted my phone with superone click and confused with next steps. do i need to unlock bootloader ? do i need to flash with Naa kernel ? Some guides instructing to install minicm7 without unlock bootloader and kernel flash.which correct or good ? I dont know what to do and I dont want to brick my phone too. Please help me and thank you very much for ur time
Click to expand...
Click to collapse
If you want to run MiniCM7, by nAa, you need to unlock your bootloader and flash the nAa GB kernel (currently at version 13).
If you want to run MiniCM7Pro, you can run it without a custom kernel and without unlocking your bootloader.
They are two different ROMS with almost the same name, i can understand why that can be a bit confusing

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MiniCM7Pro
Thank you very much SmG67, for your fast and valuable reply. Am a newbie here and I am trying to learn the things.Your information is really cleared my fear about bricking. I have few doubts to share with you sir,
What is the main difference between minicm7 and minicm7pro ?
If I opt minicm7pro now, then Can I upgrade or install minicm9 later ?
Minicm7pro by Bpaul is not giving any instruction for how to install it. So where can I get the instructions
SmG67 said:
If you want to run MiniCM7, by nAa, you need to unlock your bootloader and flash the nAa GB kernel (currently at version 13).
If you want to run MiniCM7Pro, you can run it without a custom kernel and without unlocking your bootloader.
They are two different ROMS with almost the same name, i can understand why that can be a bit confusing
Click to expand...
Click to collapse

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shane64 said:
Thank you very much SmG67, for your fast and valuable reply. Am a newbie here and I am trying to learn the things.Your information is really cleared my fear about bricking. I have few doubts to share with you sir,
What is the main difference between minicm7 and minicm7pro ?
If I opt minicm7pro now, then Can I upgrade or install minicm9 later ?
Minicm7pro by Bpaul is giving any instruction for how to install it. So where can I get the instructions
Click to expand...
Click to collapse
Minicm7Pro was a port to the x10mini-pro from early MiniCM7 for the x10-mini, but it got updated to the latest Gingerbread, while still working with the stock kernel, minicm7 was released later and moved to the nAa-custom kernel, which gave it some performance benefits.
If you can unlock your bootloader, you can flash any kernel and rom you like that is available for your phone, but MiniCM7Pro or ArcMini Nxt (which runs on just about any kernel) are good places to start anyway.
for installing MiniCM7Pro you need:
2.1.1.A.0.6 firmware with *4015 baseband (check Settings - About Phone, the baseband should end in 4015)
Rooted phone
ClockWorkMod Recovery
Copy the MiniCM7Pro zip to your sd-card
Boot into CWM (press back-button on the kernel-logo)
Do a backup
Install the ROM
Wipe factory-data/reset
Wipe Cache
Wipe Dalvik-Cache (in CWM advanced)
Wipe Batttery Stats (in CWM advanced)
Reboot and enjoy

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MiniCM7Pro
Thank you very much, and I am now looking into how to install it on my device.Because minicm7pro thread is not giving any step by step instruction to install it. I am really appreciating your help. Good day

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@ SmG67
Thank you very much for your advice's and I upgraded my x10 mini pro to android 2.3.7 ( cm7 pro) . I really appreciating your help on this regard. I was out of station for a while,and that's the reason for this late reply.My phone is working without any problem except wifi hotspot, It will show turning on and continue that status without actually turning it on when I am trying to enable it.Although its not a big headache or function for me.so its okay.Once agin thanks.Good day

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MiniCM 7 pro to ICS
@ SmG67
hi... My x10 mini pro running on Minicm7 pro by paul and stock kernel.I installed it according to your advice and I appreciating your helping words. Now I would like to move to ICS rom and nAa kernel. I have few doubts regarding installation.
1. Do I need to go back to old 2.1 factory ROM before flashing ics and ics nAa kernel ?
2. If yes, How can I install old SE rom ?
3. Can I install MiniCm9 over JB nAa kernel ? because it will reduce my job when am moving to ics to JB rom
Thx
shane64 said:
@ SmG67
Thank you very much for your advice's and I upgraded my x10 mini pro to android 2.3.7 ( cm7 pro) . I really appreciating your help on this regard. I was out of station for a while,and that's the reason for this late reply.My phone is working without any problem except wifi hotspot, It will show turning on and continue that status without actually turning it on when I am trying to enable it.Although its not a big headache or function for me.so its okay.Once agin thanks.Good day
Click to expand...
Click to collapse

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shane64 said:
@ SmG67
hi... My x10 mini pro running on Minicm7 pro by paul and stock kernel.I installed it according to your advice and I appreciating your helping words. Now I would like to move to ICS rom and nAa kernel. I have few doubts regarding installation.
1. Do I need to go back to old 2.1 factory ROM before flashing ics and ics nAa kernel ?
2. If yes, How can I install old SE rom ?
3. Can I install MiniCm9 over JB nAa kernel ? because it will reduce my job when am moving to ics to JB rom
Thx
Click to expand...
Click to collapse
1. No
2. 1 was a no, so no need for that
3. No, it won't work.

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For 2011 devices line, be sure you are not in MTP mode
Thank you SmG67....I checked my device with s1tool and found " SEMC SIMLOCK CERTFICATE " then forwarded to flash tool. But I faced an issue and my flashing halted. When I am connecting my phone it will detect and showing INFO : For 2011 devices line, be sure you are not in MTP mode ....then going to charging mode....Dont know whats the reason ? :crying:
For your info : I installed all x10,x8,x10 mini pro ADB drivers, fastboot drivers, Flashmode drivers etc. USB debugging is ON, unknown sources is enable......my flashtool version was 0.6.8.0 .
SmG67 said:
1. No
2. 1 was a no, so no need for that
3. No, it won't work.
Click to expand...
Click to collapse

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shane64 said:
Thank you SmG67....I checked my device with s1tool and found " SEMC SIMLOCK CERTFICATE " then forwarded to flash tool. But I faced an issue and my flashing halted. When I am connecting my phone it will detect and showing INFO : For 2011 devices line, be sure you are not in MTP mode ....then going to charging mode....Dont know whats the reason ? :crying:
For your info : I installed all x10,x8,x10 mini pro ADB drivers, fastboot drivers, Flashmode drivers etc. USB debugging is ON, unknown sources is enable......my flashtool version was 0.6.8.0 .
Click to expand...
Click to collapse
Our phone is 2010 device so don't worry about the mtp mode thingy
Your lfashing halted because you didn't unlock your bootloader yet.
Connect your phone to flashtool
Choose Únlock bootloader' in the plugins menu
Follow Instructions
Flash the kernel
You should be fine