Logicly Serial Key Macl
Logicly Serial Key Macl ---> https://urluso.com/2t2zva
Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900.
Pattern of MLB (Main Logic Board) serial Alert: If you are seeking for some quick single click iMessage fix, this is not about that at all.. This research digs a much deeper, it's about an aspect of building computer, which is able to run properly OS X. This post is purely educational. Understanding of this subject also requires knowledge of some basics of ICT. This topic isn't for sure for Windows dumb user, who wants some sort of OS X single click installations. For single click solutions buy a genuine Mac. Since Apple has made several changes on services, hardware identification becomes more and more important. For proper activation is needed a valid stable device. Device serial numbers, various hardware id's etc are part of identification and authentication. Just for clarity. Abbreviation MLB is shortened form of phrase Main Logic Board, which is a hardware part (motherboard). Abbreviation MLB is used by custom comp builders community also as Serial ID of Main Logic Board, which is an identification code of single unique hardware part. In this post MLB can refer to both, serial id of main logic board or main logic board itself. So, pay attention to the context when your read this post. MLB as hardware part id (barcode), is used by various services on OS X based comp, especially on Yosemite. So, you don't need only a good serial number in your SMBIOS settings, but also a good MLB, which matches logically (not by letter) your serial number. It's obvious at this point, that proper serial number isn't enough anymore. You need a good combination of serial number, MLB, etc. Those values should remain persistent. If someone told you, that MLB and serial number aren't related, you couldn't relay on this information, as MLB and serial number are logically related with each another. Probably I don't have to remind you - system serial number reveals your system model. Probably you haven't heard that MLB reveals exact model of your system Main Logic Board (hardware part) too. The Genesis of Apple computer ID's You can think about Serial Number as an "external id" and MLB as an "internal id". Computers are built from inside out. For first main board, then other parts and finally gets boxed. Serial Number reveals entire product box (comp, device) sold to the customer, MLB reveals the main hardware part inside of this product. Serial Number and MLB are like two puzzle pieces from same unique puzzle. MLB tells even more about your hardware than a serial number. Mac device gets first the MLB id and later the Serial Number. So MLB is the primary identification for Mac hardware before it's assembled completely for selling!!!! Also Apple repair services have who forgot sometimes to burn Serial Number back to the new replacement logic board. Logic boards come from factory without Serial Number. Below is the genesis of genuine Mac comp ID's.
Before you read forward, keep in mind, I'm not a hardware engineer, so I'm not familiar with all specifics related to computer hardware. Pay attention - 2 different patterns! General pattern for system serials (barcode) is the same:
Apple uses 2 different main patterns for serials (product serial, hardware part serial etc) now. Before Apple used 11 char serials for product and 13 char for MLB. Later Apple started to use a new standard to fit needs of increased production. Product serial length is 12 chars (Barcode Code 128) and MLB 17chars. Old serials have a bit common pattern for both, products and hardware parts and new ones have also a common pattern. Below is the difference of 11 and 12 char system serials:
MLB's pattern/length was also upgraded when system serials become updated. Thats why there are 13 and 17 char MLB's available. For new pattern Apple has modified the "Y" component to include a letter code instead of a number, and the new system will reflect in that code not only the year of manufacture, but also whether it was manufactured in the first or second half of the year. The new week format utilizes one of 27 alphanumeric characters to denote the week of manufacture, beginning with 1-9 and moving on to letters, omitting 0, vowels A, E, I, O, and U, as well as B, S, and Z. Because the 27 possible characters can not account for all of the weeks in the year, the "W" component must be paired with the "Y" component to determine whether the machine was manufactured in the first or second half of the year, with the "W" codes recycling every six months. System serials and hardware ids are serving various logistical purposes (barcode). They should be easy to use by barcode reader and should be easy to decipher with simple regular expressions (regex). Its wise to use common general pattern everywhere. So, it's obvious that some pattern might occur for both, system serials and hardware part ids. About 13 char MLB Perhaps someone can complement my research about 13 char MLB. As you see below, there is a certain pattern hidden in MLB. I have found this pattern first after examination of approx. 50 MLB's and is conformed by additional research later. Based on this pattern MLB is easily reversible. Name your MLB and I'm able to tell to you to which Mac model it belongs, where and when made, and so on. It's not a random string.
Please note, it's easy interpret wrongly this pattern, as it has similarities with 11char serial.. Some are guessing that they can use serial number parts for MLB. It's not true. Manufacturing location and model id's aren't shared between serial number and MLB. Definitions in serial number aren't valid for MLB. Do not try to use serial number location or model ids for MLB, those aren't valid. MLB uses its own definitions. If you have any additional or more adequate information about this pattern, please let me know! * * * About 17char MLB's 17 char MLB is a bit harder to decipher. I have found this pattern after examination of approx. 10 MLB's. I suspect that Apple is using a new system for year and week identification for 17 char MLB. I guess that YW pattern occurs in 17char MLBs, but location is shifted and there is only one char used for week.
You are welcome to support this research. Thank You! * * * How to setup MLB For first, pay attention: getting a good combination of serial, MLB and ROM etc is an exact science. Do not try to guess or randomly generate those values. Invalid values will cause a head-heck and if you are trying to use some Apple services, you get banned for those services soon or later, especially iMessage and FaceTime. Your system serial and MLB are sent to Apple! MLB and system serial should match logically. Do not contact Apple's support in any case, even if you have this kind alert. You are not eligible for Apple support with custom built computer.
Please note also, you couldn't just convert Serial Number into MLB. You can bake a MLB, but you couldn't convert Serial Number directly into MLB. Do not try. Similarity is confusing, MLB and serial number are sharing only overall barcode pattern. Serial number is good point from where to start, thats obvious, as MLB and serial should have logical match, but not match by letter. You couldn't use MacPro logic board on MacBook, it's obvious and super easy to check by Apple. So, pieces of puzzle should fit with each another. I guess it's smart to use similar production time with system, just set MLB production time up to 6 months earlier of system production time. Production number is easy to calculate. Trickiest parts are the beginning and the end as there is no easily accessible public info avilable about these parts for MLB.
If motherboard manufacturer supports flashing comp MAC addresses, you can also try to rewrite original MAC addresses with valid Apple type MAC addresses. On this scenario value is taken directly from hardware. Flashing of MAC address is also the most bullet proof option to keep ROM value unchanged. Read about flashing on this post: Flashing Mac Address. Important note. For Clover use for all values UPPER CASE letters. I got a huge head heck with iMessage/FaceTime by using lowercase values. Note, If your serial is 11 chars, it's recommended to use 13 chars MLB. If you are using 12 chars Serial Number, you should use 17char MLB. It's not the 100% rule, but somewhere between 2007-2010 Apple started to use a new pattern for identification numbers (product serial, hardware serials etc). iCloud / iMessage / FaceTime errors Apple provides 44 different online services for his customers. Most of these require some sort of identification/authentication. Before signing into any Apple's services from custom built comp, think twice. And after that, think twice again! Are you Apple's customer at all? Do you have any genuine Apple device, which grants access to Apple's services? If yes, it's a bit up to you from where you access these services, from your custom built mac or from iDevice or from iCloud webpage etc. Whatever you do, do not attack Apple or anyone else! NB! Most of iMessage Fixing guides available on Internet are invalid today. Be very careful! If you got error shown below on your custom made comp, I do not recommend contact Apple support. 2b1af7f3a8