galaxy S2 problems - Galaxy S II Q&A, Help & Troubleshooting

hi i have been using a galaxy S2 recently my battery was dead so i used another small battery of another phone and used paper to make it fit in there and worked the phone worked so i flashed cyanogenmod custom rom cm 13 and still worked i started playing pokemon go i used the phone for about 1 week without any problems but one day i found it turned off and i tried turn it on and he boot to a screen with samsung galaxy s2 gt-i9100 and with a yellow thing below and shut down he doesnt turn on but when i pluge it in to charge it and attempt to turn it on it does properly i let it to fully charged and i unpluged itand it didnt turn off i worked with it suddenly it turned off and when i attempt to turn it on it stuck on that screen of sumsung galaxy S2 gt-i9100 and a yellow thing below it stay like that and i can boot to recovery mod but i cant boot to download mod can u help me please and sorry for my bad english
thank you

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Samsung S2 Bricked?

Hey people,
today i wanted to flash my friends S2 i9100.
First i pushed cwm etc on the SdCard, plus the newest AOKP 4.,2.1 nightly builds for i9100.
I rooted the phone with cwm touch and started flashing the rom.
its said "installing update..." about 6 Minutes...then suddenly black screen, phone off...
Now, no reaction at all, it doenst boot, it doesnt boot in DL mode nor CWM mode...
Anybody an idea?
i pretty guess its bricked, but is there any hope?
Would it maybe work with USB Jig?
Thanks!!
USB jig is always worth a go if unsuccessful it will need to go away to get jtaged. Has the phone still got power in the battery
sent from my Gt-I9300 or my Gt-I9100
Warranty▶usb jig▶jtag▶motherboard.
And with friends like you, who needs enemies.

Phone wont boot past the samsung screen

I have been having this problem for months now.
My phone is rooted cf method and i am using omega rom v58.
Everytime i shut the phone down or it crashs i have to pull the battery i reflash the rom because the phone when switched back on does not boot past the samsung galaxy s3 screen!
Has anyone any ideas how to fix this its driving me crazy.

S3 probably hard bricked - unaccesable

Hello guys, I've been around a while at XDA just haven't bouned myself yet within the community.
I usually get my problems sorted out but I recently occured an error that I just can't get out neither how it happend
All of the sudden my Rooted Samsung Galaxy S3 with Android 4.4 ROM crashed and isn't able to boot up anymore he is stuck at the samsung logo and won't resume to the bootloop, I can't bootup into download modus nor recovery modus. I am clueless, I got no idea how this happend all of the sudden and I have no idea how to get rid off it. If any smart guy could help me out that would be great. when i put in my charging cable the led wont lit up neither. It does charge thou.
PS: I have no idea in what category I should post this thread since I am new
Thanx in advance

stuck on cwm/ before bootscreen

hey guys,
i was partying and my phone had a total blackout. i thought i broke it physically.
some days later, turns out its actually working. i can access download mode and recovery mode. i wiped all caches and reinstalled cyanogenmod. everything working fine until here. as soon as i hit reboot, the phone shows a black screen with the grey battery on it (as if battery was too low to boot). its not possible to start the rom. i hava a european sgs III gti 9305 with cm 10.1.3 flashed
any suggestions?
would appreciate any help

Samsung Galaxy Young Duos- Stuck After Flashing S5830M With Odin

Wrong firmware installed
Dear friends i need some help, yesterday i was doing some changes to my Samsung Galaxy Young Duos with Odin Downloader at certain point everything was alright until i got distracted and installed the S5830M firmware on it (It contained only the PDA file) it installed successfully but, when the phone was turning on showed me the boot image, and got stuck there, later it turned off by itself and now only shows a white screen, turns off and turns on again and so on... (when it turns on shows the white screen and later turns off and it keeps doing that until the battery is dead) I've tried a lot of things and nothing really works at all, it doesn't enter in Recovery or Download nonetheless it only shows the damn white screen and doesn't do nothing Could somebody help me?

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