Redmi Note 3G - Downgrade MIUI8 to MIUI7

Redmi Note 3G

Sudah berbulan-bulan aku pakai ROM MIUI7 China Developer version untuk handphone Redmi Note 3G aku. Hampir setiap minggu akan ada update baru dengan ciri-ciri yang bagi aku agak menarik. Walaupun berdepan dengan masalah tulisan cina yang kadang-kadang masih ada di dalam beberapa app dari Xiaomi, tapi sebab nak keep up-to-date punya pasal, aku tetap bersabar. Lagipun ROM ni disediakan fungsi 'root'.

Minggu lepas seperti biasa dapat lagi update baru. Disebabkan aku set auto download, update tu terus download bila ada sabungan wi-fi. Aku pun terus pilih untuk pasangkan ke dalam handphone. Siap pasang, rupa-rupanya major update, MIUI8. Paparan memang cantik, scroll-down menu pun menarik dan terdapat beberapa ciri baru yang menarik dalam MIUI8 ni.

MIUI8

ROM versi China ni sebenarnya tidak mesra app dari Google sebab dah undang-undang China sekat produk Google. Jadi ROM ni tidak didatangkan sekali dengan Google Account Manager, Gmail, Google Play Service, Play Store, Google Calendar dan semua app dari Google. Jadi nak guna app ni kena pasang menggunakan Google Installer. Selama ini tidak ada masalah tetapi untuk MIUI8 ni, aku langsung tak dapat nak pasang Google App. Antara masalah aku:

1. Email baru tak masuk dalam Gmail
2. Tak dapat update event dalam Google Calendar
3. Contact tak update
4. Langsung tak boleh masuk Google Play Store

Jadi aku buat keputusan untuk downgrade ke MIUI7 Global version.

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Before you start!

Please make a backup for all your important files. My Note 3G give "NVRAM WARNING Err = 0x10" every time I do a clean wipe out. So make a copy of your Bluetooth and WiFi MAC address.

To fix NVRAM Err = 0x10, please follow this link.

How to Fix NVRAM Err = 0x10

How to backup Wifi and and Bluetooth MAC address

What you need:

• Rooted phone
• File manager (I use ES File Explorer and enable root function)

Step to backup:

1. Turn off your Wifi and Bluetooth adapter.
2. Start you root file manager and locate the filenamed Wifi and Bluetooth in the location Data/Nvram/APCFG/APRDEB, make a copy of this on your phones SD card
3. Copy this file to your PC. Please keep this file safely because you may need it every time you flash (full wipe out) to new firmware.

Step to restore:

1. Turn off your Wifi and Bluetooth adapter.
2. Start you root file manager and locate the filenamed Wifi and Bluetooth in the location Data/Nvram/APCFG/APRDEB, delete the files.
3. Copy your backup Wifi and Bluetooth MAC address files from your SD card and paste it in Data/Nvram/APCFG/APRDEB
4. Please change the file permission by selecting the file and go to Properties.
5. Change the permision to R--R--R-- . (Read permission and no Write or execute permission.)

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Downgrade MIUI8 to MIUI7

What you need:

1. ROM MIUI7 Global Version

Step to downgrade:

1. Copy the downloaded ROM to your SD Card.
2. Go to Folder Tools > Updater.
3. Click (...) - Upper right
4. Select "Choose update package".
5. Select your downloaded ROM.
6. Wait till it finish flashing. 
7. After it fully restart, go to Folder Tools > Updater.
8. Click (...) 
9. Now select "Reboot to recovery mode". 
10. In recovery mode, use your volume button to highlight "Wipe and Reset". Use power button to select. 
11. Select "Wipe all data" (your external storage will not be wipe out, so don't worry). 
12. Go back to Mainmenu and Reboot to system. 
13. Done.