What is Difference Between Recovery Mode and DFU Mode

The Main difference between the Recovery mode and DFU mode is iBoot. Recovery mode uses iBoot during restoring or upgrading your iPhone while DFU mode bypasses the iBoot so you can downgrade the current firmware because there is no iBoot agent during the DFU mode. About iBoot, iBoot is the bootloader on iPhone OS devices. iBoot acts on restore while iPhone is in Recovery Mode, iBoot makes sure that you are flashing a firmware version greater than or equal to a current one. If you are not, iBoot will not allow the restore to proceed. Because of this, firmware downgrading must be done in DFU mode.This means if you need to restore your iPhone to current version simply put the iPhone in recovery mode and iTunes takes care of the rest but if you need to downgrade your current firmware to lower one you need to put your iPhone in DFU mode. For example you can’t downgrade Firmware 3.0 to Firmware 2.2.1 without entering in to DFU Mode.

Recovery Mode : Recovery Mode is a state of iBoot that is used during standard upgrades and restores. As iBoot is active, it does not allow you to downgrade your device’s software. Also, unless it is ‘pwned,’ it will not allow custom firmware to be flashed.

DFU Mode : DFU Mode is a special mode where the device can still interface with iTunes, yet it does not load the iBoot. The screen will appear totally black in DFU mode, so you can’t guess whether the device is in DFU or powered down from simply looking at the screen. Because iBoot and the OS are not loaded this exploit makes us able to downgrade your iPhone firmware or upgrade with a custom firmware created by Pwnage tool.

How to put your iPhone in recovery mode :

1. Turn the device completely off and disconnect it from cable/dock.
2. Hold down the home button.
3. While holding down the home button connect to a computer with a cable (easiest) or dock.
4. Keep holding down the home button until you see a connect-to-itunes screen You are now in recovery mode.

To escape Recovery Mode and power the phone off simply hold down power and home buttons for ten seconds.

How to put your iPhone in DFU mode :

1. Connect your iPhone to your computer.
2. Turn iPhone off.
3. Hold power and home together for 10 seconds (exactly).
4. Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
5. A few seconds later iTunes should detect your iPhone.
6. If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.

Read More

South Korea To Launch 5G Service

• South Korea is now investing £900million in 5G services.
• Trial service expected in 2017 with commercial service by December 2020.
• Will allow users to download a 800MB movie file in one second.
• Speeds up to 1GB per second are 1,000 times faster than 4G.

By aDEEL iLYAS

South Korea is to introduce a blazing fast 5G mobile internet service, quick enough to download a full length feature film in less than a second.

While most of the world has yet to experience the improvements offered by 4G services, the technologically advanced country has announced a  £900million (1.6 trillion won) in its successor.

South Korea's science ministry said it aims to implement the technology, which is about 1,000 times faster than the 4G, within six years.

+2

Speedy: South Korea are investing £900million into 5G wireless internet services capable of downloading an entire film in a single second

5G will allow users to download a 800-megabyte movie file in one second, compared with 40 seconds using 4G, the science ministry said, adding that such speeds would help South Korean firms win overseas deals.

 

A ministry spokesman said: 'We helped fuel national growth with 2G services in the 1990s, 3G in the 2000s and 4G around 2010. Now it is time to take preemptive action to develop 5G.' 

'Countries in Europe, China and the US are making aggressive efforts to develop 5G technology ... and we believe there will be fierce competition in this market in a few years,' it said.

THE 5G REVOLUTION

• 1,000 times faster than the 4G
• Speeds of up to 1gbps
• 800-megabyte movie file downloaded in less than one second
• Trial 5G service will be rolled out in South Korea in 2017
• Fully commercial service in December 2020
• Chinese manufacturer Huawei looking at a 5G rollout by 2020

Under the roadmap, a trial 5G service will be rolled out in 2017 and a fully commercial service in December 2020.

Priority will be given to developing key features for the new network, including Ultra-HD and hologram transmission as well as cutting-edge social networking services.

Related industries will be able to rack up sales of 5G-related devices and infrastructure equipment worth 331 trillion won from 2020 to 2026, the ministry estimated.

The government hopes to implement the plan with investment and cooperation from operators such as SK Telecom and Korea Telecom as well as handset makers like Samsung and LG.

It also aims to expand the telecom infrastructure equipment industry, which is relatively weaker than the mighty mobile device sector.

Led by Samsung - the world's top handset maker - South Korea has a leading 30-percent stake in the global mobile device market.

'But the (telecom) infrastructure equipment industry has only a 4.4 percent share in the global market, with exports very limited,' the ministry said.

Chinese equipment makers including Huawei have expanded their presence in the global market from 12 percent in 2007 to 26 percent in 2012.

Huawei announced in November that it was looking at a 5G commercial rollout by 2020, with a minimum investment of $600 million to develop the technology.

Seoul intends to take up to a 20 percent stake in the world's telecom infrastructure equipment market by 2020, according to the ministry.

+2

South Korea's science ministry said it aims to implement the technology, which is about 1,000 times faster than the 4G, within six years

New opportunities South Korea is renowned for being at the forefront of internet technology with broadband speeds that consistently out-pace those in Europe or the United States.

Officials said the new service would also mean people on bullet trains running faster than 500 kilometres (310 miles) an hour would even be able to access the Internet, compared with 300 kph currently.

'Bullet trains around the world keep getting faster, with some in China running as fast as 500 and 600 kilometres per hour,' said one ministry official who declined to be named.

'If we have the technology to allow fast Internet access in these trains, it can open new opportunities for us globally,' he said.

Samsung Electronics announced back in May that it had successfully tested 5G technology, managing data transmission of more than one gigabyte per second over a distance of two kilometres.

Samsung said it had found a way to harness millimetre-wave bands which have proved to be a sticking point for the mobile industry to date.

The test used 64 antenna elements, which the tech titan said overcame the issue of 'unfavourable propagation characteristics' that have prevented data travelling across long distances using the bands.

However, it made clear that the technology would not be available commercially before the end of the decade.

Read More