Regular Serial numbers - Highest serial number shipped for the year. Regular numbers began with 5,000 which shipped October 15, 1932.

Note the serial number research is a work in process and these numbers are the best estimates as of the revision data of this page. Although it appears that the guns were generally assembled in numerical sequence, the shipments were not and some guns remained in inventory for weeks, months, or even years between assembly and shipment. The only valid way to determine the shipping date is by researching the individual serial number in the factory records.

Samsung S2 Firmware -

However, the official story of the Galaxy S2’s firmware is only half the narrative. What truly cemented the device’s legacy was its vibrant aftermarket development community. When Samsung eventually ceased official firmware support, the S2’s open bootloader (a version that was not permanently locked) allowed developers to create custom firmware. This gave birth to a thriving ecosystem on forums like XDA Developers. Custom firmware such as CyanogenMod, LineageOS, and SlimROM breathed new life into aging devices. These community-built firmwares stripped away Samsung’s proprietary TouchWiz layer, optimized memory management, and even ported newer versions of Android—such as KitKat, Lollipop, and even Nougat—to a phone originally designed for Gingerbread. This ability to rewrite the device’s digital spine meant that a Galaxy S2 could remain functional, secure, and surprisingly speedy for nearly half a decade after its retail release, a feat few modern smartphones can claim.

Nevertheless, engaging with the S2’s firmware was not without risk. Flashing new firmware—the process of rewriting the device’s internal memory—was a delicate operation. Tools like “Odin,” Samsung’s proprietary download mode utility, allowed users to install official or custom firmware packages. But a single corrupted file, an incorrect driver, or a sudden power loss during the flashing process could result in a “bricked” device, turning the smartphone into an inert piece of plastic and metal. Users had to understand concepts like “NAND Erase All,” “PIT files” (Partition Information Table), and “EFS” (a critical folder containing the phone’s unique IMEI number). Losing the EFS data during a firmware flash could permanently disable the device’s cellular functionality. Thus, while the flexibility of the S2’s firmware empowered users, it also demanded a level of technical literacy and caution that foreshadowed the complexities of modern system administration. samsung s2 firmware

In the history of mobile technology, few devices have achieved the iconic status of the Samsung Galaxy S2. Released in 2011, this smartphone was a benchmark for design, display quality, and raw performance. However, beneath its sleek polycarbonate shell and brilliant Super AMOLED Plus screen lies an often-overlooked hero: its firmware. The firmware of the Samsung Galaxy S2 served as the device’s digital spine, orchestrating the delicate dance between hardware components and user commands. More than just a simple operating system, the S2’s firmware represented a pivotal moment in Android’s evolution, a testament to user customization, and a unique case study in technological longevity. However, the official story of the Galaxy S2’s

At its core, the firmware of the Galaxy S2 is a specialized class of software permanently stored in the device’s NAND flash memory. Unlike standard applications, this low-level code directly controls the device’s hardware, managing everything from the Exynos 4210 dual-core processor to the power distribution of the 1650 mAh battery. For the end user, the most visible layer of this firmware was the operating system: initially, Android 2.3.4 Gingerbread. However, the true essence of the S2’s firmware lies deeper, in components like the bootloader, the kernel, and the proprietary hardware drivers. The bootloader initiates the boot process, the kernel acts as a translator between software and hardware, and the drivers ensure that components like the 8-megapixel camera or the GPS module function correctly. Together, these elements form a cohesive unit that transformed a collection of silicon and glass into a responsive, intelligent tool. This gave birth to a thriving ecosystem on

In conclusion, the firmware of the Samsung Galaxy S2 was far more than a simple operating system; it was the dynamic, programmable intelligence that made the device a legend. It defined the user experience through official updates from Samsung, enabled a decade-long lifespan through community-driven custom ROMs, and demanded respect through the risks of modification. The S2 sits at a unique crossroads in tech history: sophisticated enough to be powerful, yet open enough to be truly owned by its users. Studying its firmware is not merely an exercise in retro-computing; it is a lesson in how software freedom can transform a consumer good into a lasting platform for innovation and learning. The digital spine of the Galaxy S2 may have been written in code, but its impact was deeply human.

Notes:
1. 3,000,000 This 9211 Victor shipped 1 March, 1974
2. Last gun in regular series shipping in 1975 This 9247 Supermatic Trophy shipped 28 August, 1975.
3. Last serial number in regular series excluding the special Victor S/N 3,000,000 This 9329 Double Nine shipped 26 October, 1976.
4. First G prefix guns to assembly 8 July, 1975, packed 14, July, shipments began 21, July, 1975
5. Last? Leisure Group G prefix 12 Aug, 1977.
6. G 19,299 - G 19,319 are all 9201 Sport Kings 20 guns all shipped March 1978.
7. First High Standard Inc. G20,000 - G 20,105 (103 guns) are all 9244 Supermatic Citations. G 20,106 - G 20,233 (116 guns) all are 9201 Sport Kings
8. G six digit are all 9200 or 9201 Sport Kings Note right most digit is always a zero so the serial number increments by 10's not 1's 254 guns. One exception to      numbering is G 162,011. All shipped October 1978
9. First ML prefix serial number. to production 7/22/75, packed 7/26/75, shipped 7/25/75. Note records show MIL prefix from MIL 01,001 to MIL 01,099 and    ML from ML 01,100 on. This needs to be verified by observation of actual guns.
10. Last Hamden ML prefix 14 December, 1976
11. EH 00,001 9217 First East Hartford gun 16 June, 1977
12. First East Hartford ML prefix pistol. First shipments of ML prefix guns 17 June, 1977.
13. Last Leisure Group ML prefix 21 Dcember 1977.
14. First pistols with ML prefix made for High Standard, Inc. Mixed production dates between 2 February, 1978 and 9 November, 1978 with one pistol   manufactured 16 February, 1980.
15. First pistols with ML prefix made for High Standard, Inc 21 March, 1978
16. Last regulsr ML prefix gun 15 September, 1981.
17. Gun is a single serial number separated from rest of ML records. Shipped 5/22/1981
18. MLG prefix are all 9259 Sport Kings 123 guns. All shipped May 1980.
19. First SH serial number shipped 5/22/1981
20. Last SH gun 25 June, 1984, last observed shipment 28 July, 1984. Last SH serial number SH 34,075, Frames only SH 34,000-SH 34,075. Note overlap with   serial numbers of shipped guns. Frames to G. W. Elliott 13 November 1984
21. The early Model C pistols were in a separate serial number series beginning at 500 and ending at 3,116. Earliest shipment began December 1, 1936 with serial numbers 516, 523, and 525 latest shipment was 3,116 shipping on 10/3/1939.
22. The early Model A and D pistols were in a separate serial number series beginning at 500 and ending at 555. Numerous OPEN records. Earliest recorded shipment was April 6, 1938 and latest shipment was on 10/8/1939
23. The Model G .380 was also in a separate serial numebr series. The records run from 100 through 7,881 ut at least one survvoe is known with a serial number below 100. Shipments are not well ordered with respect to teh serial number. Shipment dates range from September 13, 1947 throuigh Late 1951 with a few outliers later. A few G .380's have serial numebrs in the regular serial number series between 328,161 and 329,430 all with a ship date of 7/26/1950.

Compiled by _ John Stimson, Jr.
Released ___ 30 March, 2002, Revised ___1 April, 2002, Revised ___25 Dec, 2003
Revised ___29 March, 2005, Revised ___9 October, 2005, Revised ___28 February, 2007
Revised ___1 May, 2012
© John J. Stimson, Jr. 2002, 2003, 2004, 2005,2006,2007,2008,2009, 2010, 2011, 2012

YEAR	Serial number	G prefix (5 digit)	G prefix (6 digit)	ML prefix (5 digit)	MLG prefix (5 digit)	SH prefix (5 digit)

1974	2,469,497 (1) 3,000,000	.	.	.	.	.
1975	(2) 2,500,810	(4) G 1,001 G 04,566	.	(9) ML 01,001 ML 06,747	.	.
1976	(3) 2,500,811	G 13,757	.	(10) ML 23,065	.	.
1977	.	(5) G 18,298	(8) G 160,000 G 162,590	(11) EH 0001 (12) ML 25,000 (13) ML 29,707	.	.
1978	.	(6) G 19,299 to G 19,319 & (7) G 20,000 G 20,223	.	(14) ML 29,708 ML 29,721 & (15) ML 30,000 ML 41,270	.	.
1979	.	.	.	ML 63,483	.	.
1980	.	.	.	ML 81,629	(18) MLG 20,224 MLG 20,408	.
1981	.	.	.	(16) ML 86,641 (17) ML 90,000	.	(19) SH 10,001 SH 18,446
1982	.	.	.	.	.	SH 25,964
1983	.	.	.	.	.	SH 31,558
1984	.	.	.	.	.	(20) SH 34,034