company provide rom flash in unlock phone and phone dead ! - Desire 820 Q&A, Help & Troubleshooting

i have HTC 820u dual sim my phone is dead bcs i am flash company provide rom in unlock phone... how to solve it

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Bootloop on Desire 816G dual sim

Please i need urgent help, the desire 816 is my only device so i need help.
I tried to install a custom ROM for my device but it was'nt for the 816G so now i have a phone that whenever i try to boot it up, get's stuck on bootloop all i can access is the CMW and i have no backup file to restore it ... Please if anyone knows how i can fix this tell me how, i already have the RUU for this device but i don"t know how to flash it, with which flash tool ? and if the phone will be detected if i connect via USB.
Ridoutounsi said:
Please i need urgent help, the desire 816 is my only device so i need help.
I tried to install a custom ROM for my device but it was'nt for the 816G so now i have a phone that whenever i try to boot it up, get's stuck on bootloop all i can access is the CMW and i have no backup file to restore it ... Please if anyone knows how i can fix this tell me how, i already have the RUU for this device but i don"t know how to flash it, with which flash tool ? and if the phone will be detected if i connect via USB.
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Hi have you resolved your problem? If not let me know I will help you.
single sim 816...
Heeralall said:
Hi have you resolved your problem? If not let me know I will help you.
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I have bootloop problem with single sim 816...
nemesis666999 said:
I have bootloop problem with single sim 816...
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Please tell me your exact phone model.
You can find all that's needed to flash an 816g (MT6592) dual-SIM device on this site.
If your device is in bootloop, watch this video to learn how to disconnect the battery, so your device can be shut down. SP Flash Tools will only work, if your phone is completely shut-down, otherwise it will continue to bootloop and your pc/the flashtool won't connect.
nukaru said:
You can find all that's needed to flash an 816g (MT6592) dual-SIM device on this site.
If your device is in bootloop, watch this video to learn how to disconnect the battery, so your device can be shut down. SP Flash Tools will only work, if your phone is completely shut-down, otherwise it will continue to bootloop and your pc/the flashtool won't connect.
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Under Desire 816, there are many variants... @nemesis666999 will have to tell his EXACT phone model..which a5_xxx model do you have?
There is no other variant of desire d816G. This device is one of a few other models with an mtk processor.
If it's really a desire d816G dual sim, only the method I posted before will work.
Besides, he posted in the wrong thread to begin with. 816G is dual sim, he posted he's got a single sim version.
Htc desire 816 (A5_DWG) stuck in bootloop.
hey there, just wanted to know is this helpful for my htc d816 a5_dwg as well. cause even its stuck in a boot loop. for some reason I don't know what my phone goes black every time I try to enter recovery mode. I flashed a twrp.image file and since then its stuck in a boot loop. please help. and also if u could comment on the blank screen problem.

i need official rom

plz i need latest official rom for desire 820 and how to install it if my device stuck on logo
Try this ROM.. It works fine on single SIM variant ...
http://forum.xda-developers.com/des...15-07-07-rom-tomals-discovery-v1-0-0-t3151623
I have tried on my dual sim variant but the sim goes undetected. Give it a GO
thank you but my device dual sim

No Sim After flashing

Hello
I'm havin a problem and i hope that some of the experts can help.
I upgrade my C6506 to 10.7.A.0.222 generic USA firm but could not make root so i downgrade to 10.1.A.350 from my carrier, obtain root access and install the dual locked recovery after that i try to install a 10.7.A.0.222 preroot but the phone stuck in a bootloop on the sony logo so I had to flash the same room via flashtool the flash was completed but since then my phone don't detect any sim and just mark the legend invalid sim , I can see my version of baseband and the IMEI of my phone besides i have tried several simcards and various roms from my original carrier but nothing works :crying:
Sorry for my bad english

Can't unlock SIM with unoffical ROM !

I have a Tmobile UK phone running a Cyogen ROM. I want to move to different network (GifGaf), but upon inserting the SIM the phone requires unlocking. I've got the codes for unlocking, but they don't work. After a bit of search it appears that I can only unlock my S4 mini with the official ROM installed which I must admit surprised me.
Therefore does anyone know where I can find an official Tmobile ROM for a UK S4 mini ?
Hi !
You have all firmwares you want at "Sammobile" (internet site) ,it's official and you must be registered for to download ,it's free (with slow download)
It's a known problem...impossible to unlock sim with customs by "classical" way (and i don't know if it's possible by hack)
In theory,you can flash again a custom recovery and after a cystom rom without loose sim unlock...
Be careful !!!!! Don't loose the number of sim unlock !!! Because if you want to flash customised firmware (ste ,N5...) => there are chance that the phone will be relocked at your T-mobile !
I don't know exactly but it's a possibility because i have see that on a old S2 updated with officials => it loose sim unlock after .
Thanks for the info.
Do you know if its possible to re-install the official ROM using Cynogen recovery or do I need to replace that also?
Reason I ask is that I tried installing the official ROM last night in Cynogen recovery and it aborted almost immediately.
Loulou-13 said:
Hi !
You have all firmwares you want at "Sammobile" (internet site) ,it's official and you must be registered for to download ,it's free (with slow download)
It's a known problem...impossible to unlock sim with customs by "classical" way (and i don't know if it's possible by hack)
In theory,you can flash again a custom recovery and after a cystom rom without loose sim unlock...
Be careful !!!!! Don't loose the number of sim unlock !!! Because if you want to flash customised firmware (ste ,N5...) => there are chance that the phone will be relocked at your T-mobile !
I don't know exactly but it's a possibility because i have see that on a old S2 updated with officials => it loose sim unlock after .
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If i root my htc g2 will it fix the req of the sim network code

Hi , I just get a t-mobile HTC g2 as a gift , and after I factory reset it and I got a problem , I insert a new sim card and it request a sim network code !! And I had sent a message to T-Mobile too but they need me to get the phone owners to contact them to get the code !! If I root the phone and flash a new room , will it Fox my problem ??
Yes it should
Flashing a new rom will fix the probem because the network lock on android devices is firmware based. Some sites on the internet provide these codes, tough.

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