Installing stock or official firmwares on Samsung devices is way easier that performing the same task on devices from other brands. You only have to get a utility called Odin, which has been developed by Samsung and is easily available unofficially, download the firmware file and go through a few steps to flash a firmware on any Galaxy phone or tablet.
Anyway, however simple such procedures may be, there always are the chances to get into some problem or mess. While most of the Odin flashes end up nicely with a PAAS! message, sometimes the firmware installation don’t end up as expected and fails because of some issue.
In the past, I wrote a bunch of tutorials for fixing different issues that are faced by users while trying to install a firmware on Samsung Galaxy device using Odin. Below, I’ve listed a few of them:
- How to Recover from Boot loop after Installing Samsung Firmware
- Fix Invalid Ext4 Image Error in Odin While Installing Firmware on Samsung
- Fix “Firmware upgrade encountered an issue” Error on Galaxy Devices
- Fix “Recovery is not Seandroid Enforcing” Error on Samsung Galaxy Devices
If you have been trying to install a firmware file on your Samsung device and the firmware installation fails because of hidden.img issue, you can use this tutorial and fix the problem.
When you get this error while installing the stock Samsung firmware, you will see the following message in the Odin log:
<OSM> Enter CS for MD5.. <OSM> Check MD5.. Do not unplug the cable.. <OSM> Please wait.. <OSM> G920FXXU1AODE_G920FOXE1AODE_G920FXXU1AODE_HOME.tar .md5 is valid. <OSM> Checking MD5 finished Sucessfully.. <OSM> Leave CS.. <ID:0/004> Added!! <ID:0/004> Odin engine v(ID:3.1005).. <ID:0/004> File analysis.. <ID:0/004> SetupConnection.. <ID:0/004> Initialzation.. <ID:0/004> Get PIT for mapping.. <ID:0/004> Firmware update start.. <ID:0/004> SingleDownload. <ID:0/004> sboot.bin <ID:0/004> NAND Write Start!! <ID:0/004> cm.bin <ID:0/004> boot.img <ID:0/004> recovery.img <ID:0/004> system.img <ID:0/004> modem.bin <ID:0/004> cache.img <ID:0/004> hidden.img <ID:0/004> FAIL! <ID:0/004> <ID:0/004> Complete(Write) operation failed. <OSM> All threads completed. (succeed 0 / failed 1)
The solution of firmware installation failure in Odin because of hidden.img is very easy and here’s how you can fix it.
- The stock Samsung firmware file with .tar.md5 extension.
- Install a zip extractor program like 7-Zip if you don’t have it installed on your computer already.
Fixing Odin Firmware Installation Failed at Hidden.img Issue
- Open the folder where you have saved the firmware file. Then click the View option in Windows Explorer menu and enable File name extensions option there.
- Now you will be able to view and edit file extensions. Right-click the firmware file and select Rename option. Now remove the .md5 extension from the file name so that it end with .tar only (see below)
- Now right-click the firmware file, highlight 7-Zip and select Extract to “firmware file name” option.
- Since the firmware file is big, it will take a few minutes to extract.
- After extracting the firmware, open the extracted folder and make sure that the system.img file size is not 0 KB. If that is the case, use a different Zip extractor.
- Anyway, look for the hidden.img file in the folder and delete it.
- Now select all files in the folder by pressing Ctrl+A keys.
- Right-click on the files and select 7-Zip> Add to archive… option.
- A new window will pop up. Click the drop-down menu in front of Archive format and select tar and click OK.
- 7-Zip will start compressing the files. Wait until the compression finishes.
- When the compression is done, you’ll get a new file with firmware name and .tar extension. Right-click this file and add .md5 extension so that you have .tar.md5 extension.
- Click Yes when prompted to ask if you want to save the changes made in the firmware file name.
- You now have your firmware ready for installation.
Done! You are now all set to install the firmware in Odin without getting failed firmware installation because of hidden.img. You can refer to our super detailed tutorial on installing stock firmware on Samsung devices.
With a hope that this tutorial will help users getting the error or failed message while installing firmware due to hidden.img, I wind up the guide here. If you need any help with the procedure described above, please let us know. Thanks!