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Wednesday, February 13, 2019

B310As-852 21.321.03.00.750 downgrade

B310As-852 21.321.03.00.750 downgrade

2017-06-20 00:16 reading:204
 Recently, Jilin Mobile's customized B310As-852 device firmware has a new version, version number 21.321.03.00.750. The same is the lock card, 3 client, only supports mobile. 
Version upgrades bring stability improvements. At the very least, only the power light problem has improved. However, for users who are using the three networks, the high version is not good news. 
The previous firmware version 21.290.01.51.59 has been studied, and 21.321.03.00.750 is the same, the operation is not much different. 
I am afraid that the soft solution is not working. The current test did not find a suitable entry point. Disassembling the hard solution is always the ultimate magic weapon, but for businesses that sell equipment, disassemble is not a good choice, after all, it will involve warranty issues. 
After the actual measurement, it is found that the downgrade is feasible, but the steps are a bit troublesome, but overall it is still acceptable. Given the institutional constraints, unknown here said, interested in studying the downgrade version, you can micro-channel

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