samsng galaxy s3 neo dual sim repeatedly turning on and off - Android Q&A, Help & Troubleshooting

Hello;
i installed an official firmware via Odin 3.07 for my samsung galaxy S3 Neo dual Sim; then that did not worked and phone di not start anymore.
After that i searched for a solution and found some debrick trick via SD card, i did it but after flashing , the phone keep starting on and off.
I tried with different firmwares, but it seems like i had to keep sd card plugged to have access to download mode and turn on the phone, else it just dont turn on.
can any one help me please

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carrier= tmobile
Hi,
This is Samsung s3 t999 & s3 guide could be can help you
http://forum.xda-developers.com/showthread.php?t=2439367
http://forum.xda-developers.com/showthread.php?t=2660566
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Follow the steps listed here http://www.sammobile.com/firmwares/download/31550/I535VRUDNE1_I535VZWDNE1_VZW/ and if this it is not the rom for your phone you can search it here http://www.sammobile.com/firmwares/
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So my question is. I have only acces to stock recovery. Download mode etc works on phone but i cant debug this phone on pc. NO WAY.
How can i back to live with this gsm? It does no matter what rom is but i want only that he works.
Tell me nothing about,
-cwm
-twrp
-odin
-usb debug
Only way is i can put files on sd card and install on stock recovery..
I hope everyone understand me. I installed some cynagogenmod but if gives error.

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