Do this at your own Risk (This procedure worked 100% on my device) I am not liable if something happened to your Cherry Mobile S100 flare device.
Requirements: Windows XP or Windows 7 (All tools set to Win XP Sp3 Compatibility & Run as Admin follow these step ~> Right click > Properties > Compatibility > Windows XP SP3 > Run as Administrator)
Required Files: UPDATED LINKS
Note: Please signup for Dropbox account before downloading the upgrade files! It will help make the files available in case my hosted copy are deleted. After signup (or if you have already have), click “Copy to my dropbox”.
Chapter 1: ICS BACKUP
1.1. Backup your ICS using Roadkill.
1.1.1. Turn off your Flare, then press Volume down and power button at the same time. once you see the “ENTRY QPST DOWNLOAD”, open roadkill and click on Store Image Tab, select the disk with 3.61GB, click browse and select the location where you want your backup to be saved, and click start. Once finish proceed to next step.
Chapter 2: WRITING
2.1. Write your IMEI1, IMEI2, Wi-Fi Mac, and Serial Number (S/N) in a piece of tissue paper. XD
2.1.1. To do that, turn on your Wi-Fi, and go to Settings > About Phone > Status. If some are missing just dial *#0000# in dial pad.
2.2. Extract all the files you downloaded. Make sure you remember the location of the file.
Chapter 3: JELLYBEAN INSTALLATION
3.1. Backup NVRam
3.1.1. Run EMMC_DownLoad_V1.2.3.exe ,(Check Download Boot Loader for 1st run)
3.1.2. Turn device ON (make sure USB Debugging is enable)
3.1.3. Connect phone thru microUSB cable (Note: Make sure there are no other USB Modem or phone connected to your computer except for Flare)
3.1.4 Click BackUp_NV.
3.1.5. Wait until back up is successful.
3.2. Download BP Firmware (“ENTRY QPST DOWNLOAD” Mode)
3.2.1. Run EMMC_DownLoad_V1.2.3.exe. Click SELPATH select “BP Firmware” Folder.
3.2.2. Connect phone thru a microUSB cable. Check Device Manager for Com Port #.
3.2.3 Look for “Qualcomm HS-Usb Diagnostics 9006” type the Comport # in EMMC Download Box. Click Download.
3.2.4. Wait until download is successful (Usually it takes 6-12sec). Remove battery. (Do not Close EMMC Download. then proceed to next Step )
3.3. Download AP Firmware (Fastboot Mode) or (Green Screen Mode)
3.3.1. Run QUALFAST2.0.5.exe. Click SELPATH, select AP firmware (“Stock JB Rom” Folder), Check Format Card & Userdata
3.3.2. Press Power button and Volume Up simultaneously. (Fastboot Mode) “Green Screen”
3.3.3. Click OK to start download then connect phone thru a microUSB cable.
3.3.4. Wait until download is successful. Remove battery.
3.4. Restore NVRam Backup
3.4.1. Run EMMC_DownLoad_V1.2.3.exe.
3.4.2. Turn device ON. (make sure USB Debugging is enable)
3.4.3. Click Restore_NV. Browse and select bak.qcn file. Connect phone thru microUSB cable.
3.4.4. Wait until qcn restore is successful. (your IMEI 2 is Null & Wifi Mac Address is set to default. you need to write it again)
Chapter 4: IMEI 2 & Wi-Fi MAC Address Writing
4.1. IMEI 2 & Wifi Mac address Writing
4.1.1. Turn device ON (make sure USB Debugging is enable)
4.1.2. Locate your modem com port number (Go to Device Manager > Right-click “Tianyu HS-USB Android Modem 9025” > Properties > Advanced Tab > Advanced Port Settings > COM Port # (Ex. 10))
4.1.3. Open Qualcomm_Modem_Tools_V1.1.2.exe and type com port #
4.1.4. Write all your backup code, then click Write button. (In my case I have re-entered my IMEI1, IMEI2, S/N (Serial Number), Wi-Fi MAC)
Note: Every after successful entry of IMEI, the phone automatically restarts.
Restart Device. Wait until it boot perfectly
Chapter 5: Flash the Bugless Flashable via Recovery Stock JB ROM v31 or v45 (already rooted)
5.1. You know already how to do that.