Help needed: HOLDS NJ-N81s - Galaxy S4 GT-I9500 clone Hello everyone, I have recently acquired a samsung Galaxy S4 clone made by Holds. While trying to root the device some parts of the firmware were altered. Dialer app crashes on open, stock launcher stuck in crash loop etc. I am looking for a stock ROM or modified ROM for the phone. Model NJ N81S (not the same as the NJ N81 ROM I've tried and failed it) the processor is said to be a SC6820a although I could not find anything about SC6820a, only SC6820 I was able to access / via ftp before flashing anything to the phone and here is the build.prop file from the phone: Code: # begin build properties universal5410 quad core ARMv7 processor running at max 1600Mhz, 1920x1080 screen, 2Gb RAM with 706Mb free, that's all I can remember bencebacsi might you have a ROM file for making this phone work? here is the picture of the phone and the information under the battery. I have some of the file from / but sadly I do not have the complete ROM dump or PAC file. http://s13.postimg.org/iu2elypzb/Chime_RAW1583.jpg http://s14.postimg.org/w48umwsa9/Chime_RAW1582.jpg |
AS I posted on another thread yesterday I've opened the phone up and popped the top lid off the mobo, the Chip is indeed a Spreadtrum SC6820. Gives me a better view for a solution. I've spent countless hours and days extracting and injecting FDL1/FDL2 files and mix matching various boot files. here are the pictures of the insides of the phone for those who are interested: Memory chip used is a Kingston 240006B (~236Megs capacity, from the datasheets specifications) http://s18.postimg.org/gevvh6zp5/mobo.jpg I'll post progress here later. Hoping to get a non grabbled display. |
OK some progress after mix matching various FDL1/2 files and injecting SPL/uboot files around along with boot/system.img recovery files I've managed to boot the phone with proper display and button mappings are correct. However I have some problems with it: -No sound yet coming from the speakers: Will swap out more DSP files later -Phones thinks it's got 2 SIM ports instead of one: I'm guessing this is because of the modem bin file & the system img file that tells the phone how many ports it's got, I could be wrong. -Touchscreen NOT working: I don't have any Idea where in the ROM area resides the touchscreen calibration file or if it's a missing driver. I'm open to any suggestions, I'm happy that the screen is no longer grabled or white. I need someone already experienced with these chinese phones as I have no Idea how to restore the touchscreen. Will post pics later. |
Made more progress last night and today. Reflashed a "compatible" system.img file and the phone boots. 1 SIM detected, and I was able to root the phone properly. My main problem is the lack of touchscreen, the proper drivers aren't loaded. Could anyone guide me on how to swap the drivers in my phone via adb shell? I have superuser access so I can push pull any file into the handset without problems. I have all the original handset files on my PC from the last time I have accessed it via ftp before it had problems with a failed root attempt. the SPS folder contains my original files, I've pushed the touchscreen driver mxc622x to the handset but I don't know where is the configuration file to load it resides. Any help is welcome. |
Does any one have the 800x480 or 854x480 version module FT5206 (ft5206_ts.ko and the ft5206_fw.bin) ? the version I have cannot initialize with insmod giving me Exec format error. |
S9_mb_v1.1-20130524 some more progress: Motherboard version is S9_MB_V1.1-20130524 http://s15.postimg.org/pcytt786z/Chime_RAW1616.jpg touchpanel IC model: FT6306DMB ERG130A http://s11.postimg.org/ao5dcj2n7/Chime_RAW1617.jpg my last problem is getting the touchscreen to work :( I don't know how to initialize the drivers, or flash the firmware.bin file into the touch panel IC. |
Some more progress, I can't seem to find a good ROM for my phone so I guess I'll have to make one up by mix matching files from different ROMS. The S9_MB motherboard seems too new to be found on the internet. So far I either get a white screen but sound is working (I can't tell if the screen is working or not when the screen is garbage), or a working screen but the sound and touch aren't working. I've been hunting down the FocalTech drivers for the FT6306 and it seems that the drivers for FT5306 work on them. The Firmware needs to be flashed to the chip but in order to do that I will need to unpack the UBOOT.img and swap the init scripts that take care of the system.img booting. I need documents on the uboot.img format, file operations I've done on the file suggests it is a cpio gzip image, I'm not sure. I've got root access on the droid without the screen working, I'm doing everything remotely on my PC via ADB. I'll upload the working FDL files and the patched Second Program Loader I made in order to get my phone to see the boot.img correctly later on if anyone else is interested, I've been waiting for a while to get help on the device, it looks like I'll have to do it myself as everyone else doesn't have the phone model I have. Will keep you all posted. |
Here are the drivers for the HOLDS NJ-N81S NOTE The drivers are for kernel version 2.6.35.7 mod_unload ARMv7 I'm looking for the "2.6.35.7 preempt mod_unload ARMv7" version of these files if anyone can post them for me here. I couldn't find the kernel version as the previous ROM so I'm baking a new one but the drivers from the phone will not load due to bad version magic error. you can check the version magic of your files by issuing an insmod name_of_module.ko command via adb or terminal and then immediately after enter dmesg and check the log at the bottom. Will post more later as I progress |
spent the last few days trying to get the drivers loaded. MXC622X.ko and ft5206_ts.ko are loaded but nothing is happening. I've done a DMESG on boot and here is what it looks like: Code: 4 0660 Code: <6>[ 4.749000] mxc622x accelerometer driver: init |
alright more progress, I've finished finding the right drivers and have stitched together a working ROM. Now sound, display, touch, network, wifi is working. Next problem is my screen is flipped upside down, but my touch is normal. Also waking up from sleep isn't working, I get a broken white screen. Still learning how to set these things properly. Any help is welcome, so far I've been on my own extracting drivers, patching via hex editor to get the phone to accept the ROM images I've made. |
fixed the screen flip problem, had to patch my build.prop to include Code: ro.sf.hwrotation = 180 |
[solved] I guess I figured it out myself. Can an Admin please change my thread title to SOLVED . I spend weeks now looking for help, only solution was to learn the platform and a ROM from scratch. With enough trial and error I got my phone working well again, if not better than the stock ROM. |
brother need pac file for this mobile kindly very urgent |
@Sweetman945 I'm am in the process of finalizing the ROM file as I write this. I'll upload it to my dropbox account once it's finished. As far as I can see no one's releasing the stock ROM for this phone, and a lot of people are searching for it, so much that bbs forums in china are making you pay for the ROM. NJ-N81 and N81s are two completely different phones, the only thing that are identical on them is the touchpanel. |
Alright everyone, for those wanting to have the ROM in pac format for this phone can download it here on my dropbox S9-MB_V1.1-20130524.rar Please not that this isn't the STOCK ROM, this was built from scratch through trial and error. I've included a readme in the rar file for known bugs. Any help getting this ROM more stable is welcome. |
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